Porcelain
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Porcelain () is a
ceramic A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, ...
material made by heating substances, generally including materials such as kaolinite, in a kiln to temperatures between . The strength and translucence of porcelain, relative to other types of
pottery Pottery is the process and the products of forming vessels and other objects with clay and other ceramic materials, which are fired at high temperatures to give them a hard and durable form. Major types include earthenware, stoneware and ...
, arises mainly from vitrification and formation of the mineral mullite within the body at these high temperatures. Though definitions vary, porcelain can be divided into three main categories: hard-paste,
soft-paste Soft-paste porcelain (sometimes simply "soft paste", or "artificial porcelain") is a type of ceramic material in pottery, usually accepted as a type of porcelain. It is weaker than "true" hard-paste porcelain, and does not require either the hig ...
, and
bone china Bone china is a type of ceramic that is composed of bone ash, feldspathic material, and kaolin. It has been defined as "ware with a translucent body" containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phos ...
. The category that an object belongs to depends on the composition of the paste used to make the body of the porcelain object and the firing conditions. Porcelain slowly evolved in China and was finally achieved (depending on the definition used) at some point about 2,000 to 1,200 years ago; it slowly spread to other East Asian countries, then to Europe, and eventually to the rest of the world. Its manufacturing process is more demanding than that for earthenware and stoneware, the two other main types of pottery, and it has usually been regarded as the most prestigious type of pottery for its delicacy, strength, and its white colour. It combines well with both glazes and paint, and can be modelled very well, allowing a huge range of decorative treatments in tableware, vessels, and
figurine A figurine (a diminutive form of the word ''figure'') or statuette is a small, three-dimensional sculpture that represents a human, deity or animal, or, in practice, a pair or small group of them. Figurines have been made in many media, with clay ...
s. It also has many uses in technology and industry. The European name, porcelain in English, comes from the old Italian ''porcellana'' ( cowrie shell) because of its resemblance to the surface of the shell. Porcelain is also referred to as china or fine china in some English-speaking countries, as it was first seen in imports from China during the 17th century. Properties associated with porcelain include low permeability and elasticity; considerable strength,
hardness In materials science, hardness (antonym: softness) is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. In general, different materials differ in their hardness; for example hard ...
, whiteness, translucency, and
resonance Resonance describes the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscil ...
; and a high resistance to corrosive chemicals and thermal shock. Porcelain has been described as being "completely vitrified, hard, impermeable (even before glazing), white or artificially coloured, translucent (except when of considerable thickness), and resonant". However, the term "porcelain" lacks a universal definition and has "been applied in an unsystematic fashion to substances of diverse kinds which have only certain surface-qualities in common". Traditionally, East Asia only classifies pottery into low-fired wares (earthenware) and high-fired wares (often translated as porcelain), the latter also including what Europeans call "stoneware", which is high-fired but not generally white or translucent. Terms such as "proto-porcelain", "porcellaneous" or "near-porcelain" may be used in cases where the ceramic body approaches whiteness and translucency.


Types


Hard paste

Hard-paste porcelain was invented in China, and it was also used in Japanese porcelain, and most of the finest quality porcelain wares are in this material. The earliest European porcelains were produced at the Meissen factory in the early 18th century; they were formed from a paste composed of
kaolin Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedra ...
and alabaster and fired at temperatures up to in a wood-fired kiln, producing a porcelain of great hardness, translucency, and strength. Later, the composition of the Meissen hard paste was changed and the alabaster was replaced by
feldspar Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) felds ...
and
quartz Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical f ...
, allowing the pieces to be fired at lower temperatures. Kaolinite, feldspar and quartz (or other forms of
silica Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is ...
) continue to constitute the basic ingredients for most continental European hard-paste porcelains.


Soft paste

Soft-paste porcelains date back from early attempts by European potters to replicate Chinese porcelain by using mixtures of clay and
frit A frit is a ceramic composition that has been fused, quenched, and granulated. Frits form an important part of the batches used in compounding enamels and ceramic glazes; the purpose of this pre-fusion is to render any soluble and/or toxic com ...
. Soapstone and lime are known to have been included in these compositions. These wares were not yet actual porcelain wares as they were neither hard nor vitrified by firing
kaolin Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedra ...
clay at high temperatures. As these early formulations suffered from high pyroplastic deformation, or slumping in the kiln at high temperatures, they were uneconomic to produce and of low quality. Formulations were later developed based on kaolin with quartz, feldspars, nepheline syenite or other feldspathic rocks. These are technically superior, and continue to be produced. Soft-paste porcelains are fired at lower temperatures than hard-paste porcelain, therefore these wares are generally less hard than hard-paste porcelains.


Bone china

Although originally developed in England in 1748 to compete with imported porcelain,
bone china Bone china is a type of ceramic that is composed of bone ash, feldspathic material, and kaolin. It has been defined as "ware with a translucent body" containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phos ...
is now made worldwide, including China. The English had read the letters of Jesuit missionary
François Xavier d'Entrecolles François Xavier d'Entrecolles (1664 in Lyon – 1741 in Beijing; Chinese name: 殷弘绪, Yin Hongxu) was a French Jesuit priest, who learned the Chinese technique of manufacturing porcelain through his investigations in China at Jingdezhen with ...
, which described Chinese porcelain manufacturing secrets in detail. One writer has speculated that a misunderstanding of the text could possibly have been responsible for the first attempts to use bone-ash as an ingredient of English porcelain, although this is not supported by modern researchers and historians. Traditionally, English bone china was made from two parts of bone ash, one part of
kaolin Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedra ...
and one part china stone, although the latter has largely been replaced by feldspars from non-UK sources.


Materials

Kaolin is the primary material from which porcelain is made, even though clay minerals might account for only a small proportion of the whole. The word ''paste'' is an old term for both unfired and fired materials. A more common terminology for the unfired material is "body"; for example, when buying materials a potter might order an amount of porcelain body from a vendor. The composition of porcelain is highly variable, but the clay mineral kaolinite is often a raw material. Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse and alabaster. The clays used are often described as being long or short, depending on their plasticity. Long clays are cohesive (sticky) and have high plasticity; short clays are less cohesive and have lower plasticity. In soil mechanics, plasticity is determined by measuring the increase in content of water required to change a clay from a solid state bordering on the plastic, to a plastic state bordering on the liquid, though the term is also used less formally to describe the ease with which a clay may be worked. Clays used for porcelain are generally of lower plasticity and are shorter than many other pottery clays. They wet very quickly, meaning that small changes in the content of water can produce large changes in workability. Thus, the range of water content within which these clays can be worked is very narrow and consequently must be carefully controlled.


Production


Forming

Porcelain can be made using all the shaping techniques for pottery. It was originally typically made on the
potter's wheel In pottery, a potter's wheel is a machine used in the shaping (known as throwing) of clay into round ceramic ware. The wheel may also be used during the process of trimming excess clay from leather-hard dried ware that is stiff but malleable, ...
, though moulds were also used from early on. Slipcasting has been the most common commercial method in recent times.


Glazing

Biscuit porcelain is unglazed porcelain treated as a finished product, mostly for figures and sculpture. Unlike their lower-fired counterparts, porcelain wares do not need glazing to render them impermeable to liquids and for the most part are glazed for decorative purposes and to make them resistant to dirt and staining. Many types of glaze, such as the iron-containing glaze used on the celadon wares of Longquan, were designed specifically for their striking effects on porcelain.


Decoration

Porcelain often receives underglaze decoration using pigments that include cobalt oxide and copper, or overglaze enamels, allowing a wider range of colours. Like many earlier wares, modern porcelains are often biscuit-fired at around , coated with glaze and then sent for a second glaze-firing at a temperature of about or greater. Another early method is "once-fired", where the glaze is applied to the unfired body and the two fired together in a single operation.


Firing

In this process, "green" (unfired) ceramic wares are heated to high temperatures in a kiln to permanently set their shapes, vitrify the body and the glaze. Porcelain is fired at a higher temperature than earthenware so that the body can vitrify and become non-porous. Many types of porcelain in the past have been fired twice or even three times, to allow decoration using less robust pigments in overglaze enamel.


History


Chinese porcelain

Porcelain was invented in China over a centuries-long development period beginning with "proto-porcelain" wares dating from the
Shang dynasty The Shang dynasty (), also known as the Yin dynasty (), was a Chinese royal dynasty founded by Tang of Shang (Cheng Tang) that ruled in the Yellow River valley in the second millennium BC, traditionally succeeding the Xia dynasty a ...
(1600–1046 B.C.E). By the time of the Eastern
Han dynasty The Han dynasty (, ; ) was an Dynasties in Chinese history, imperial dynasty of China (202 BC – 9 AD, 25–220 AD), established by Emperor Gaozu of Han, Liu Bang (Emperor Gao) and ruled by the House of Liu. The dynasty was preceded by th ...
(CE 25–220) these early glazed ceramic wares had developed into porcelain, which Chinese defined as high-fired ware. By the late
Sui dynasty The Sui dynasty (, ) was a short-lived imperial dynasty of China that lasted from 581 to 618. The Sui unified the Northern and Southern dynasties, thus ending the long period of division following the fall of the Western Jin dynasty, and la ...
(581–618 CE) and early
Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an Dynasties in Chinese history, imperial dynasty of China that ruled from 618 to 907 AD, with an Zhou dynasty (690–705), interregnum between 690 and 705. It was preceded by the Sui dyn ...
(618–907 CE), the now-standard requirements of whiteness and translucency had been achieved, in types such as Ding ware. The wares were already exported to the Islamic world, where they were highly prized. Eventually, porcelain and the expertise required to create it began to spread into other areas of East Asia. During the
Song dynasty The Song dynasty (; ; 960–1279) was an imperial dynasty of China that began in 960 and lasted until 1279. The dynasty was founded by Emperor Taizu of Song following his usurpation of the throne of the Later Zhou. The Song conquered the res ...
(960–1279 AD), artistry and production had reached new heights. The manufacture of porcelain became highly organised, and the dragon kilns excavated from this period could fire as many as 25,000 pieces at a time,Temple, Robert K.G. (2007). ''The Genius of China: 3,000 Years of Science, Discovery, and Invention'' (3rd edition). London: André Deutsch, pp. 104-5. and over 100,000 by the end of the period. While Xing ware is regarded as among the greatest of the Tang dynasty porcelain, Ding ware became the premier porcelain of the Song dynasty. By the
Ming dynasty The Ming dynasty (), officially the Great Ming, was an Dynasties in Chinese history, imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming dynasty was the last ort ...
, production of the finest wares for the court was concentrated in a single city, and
Jingdezhen porcelain Jingdezhen porcelain () is Chinese porcelain produced in or near Jingdezhen in Jiangxi province in southern China. Jingdezhen may have produced pottery as early as the sixth century CE, though it is named after the reign name of Emperor Zhenz ...
, originally owned by the imperial government, remains the centre of Chinese porcelain production. By the time of the
Ming dynasty The Ming dynasty (), officially the Great Ming, was an Dynasties in Chinese history, imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming dynasty was the last ort ...
(1368–1644 AD), porcelain wares were being exported to Asia and Europe. Some of the most well-known Chinese porcelain art styles arrived in Europe during this era, such as the coveted "
blue-and-white "Blue and white pottery" () covers a wide range of white pottery and porcelain decorated under the glaze with a blue pigment, generally cobalt oxide. The decoration is commonly applied by hand, originally by brush painting, but nowadays by stenc ...
" wares. The Ming dynasty controlled much of the porcelain trade, which was expanded to Asia, Africa and Europe via the Silk Road. In 1517, Portuguese merchants began direct trade by sea with the Ming dynasty, and in 1598, Dutch merchants followed. Some porcelains were more highly valued than others in imperial China. The most valued types can be identified by their association with the court, either as tribute offerings, or as products of kilns under imperial supervision.Rawson, Jessica "Chinese Art", 2007, publisher:the British Museum Press, London, Since the
Yuan dynasty The Yuan dynasty (), officially the Great Yuan (; xng, , , literally "Great Yuan State"), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai, the fif ...
, the largest and best centre of production has made
Jingdezhen porcelain Jingdezhen porcelain () is Chinese porcelain produced in or near Jingdezhen in Jiangxi province in southern China. Jingdezhen may have produced pottery as early as the sixth century CE, though it is named after the reign name of Emperor Zhenz ...
. During the Ming dynasty, Jingdezhen porcelain become a source of imperial pride. The
Yongle emperor The Yongle Emperor (; pronounced ; 2 May 1360 – 12 August 1424), personal name Zhu Di (), was the third Emperor of the Ming dynasty, reigning from 1402 to 1424. Zhu Di was the fourth son of the Hongwu Emperor, the founder of the Ming dyn ...
erected a white porcelain brick-faced pagoda at Nanjing, and an exceptionally smoothly glazed type of white porcelain is peculiar to his reign. Jingdezhen porcelain's fame came to a peak during the Qing dynasty.


Japanese porcelain

Although the Japanese elite were keen importers of Chinese porcelain from early on, they were not able to make their own until the arrival of Korean potters that were taken captive during the Japanese invasions of Korea (1592–1598). They brought an improved type of kiln, and one of them spotted a source of porcelain clay near Arita, and before long several kilns had started in the region. At first their wares were similar to the cheaper and cruder Chinese porcelains with underglaze blue decoration that were already widely sold in Japan; this style was to continue for cheaper everyday wares until the 20th century. Exports to Europe began around 1660, through the Chinese and the
Dutch East India Company The United East India Company ( nl, Verenigde Oostindische Compagnie, the VOC) was a chartered company established on the 20th March 1602 by the States General of the Netherlands amalgamating existing companies into the first joint-stock ...
, the only Europeans allowed a trading presence. Chinese exports had been seriously disrupted by civil wars as the Ming dynasty fell apart, and the Japanese exports increased rapidly to fill the gap. At first the wares used European shapes and mostly Chinese decoration, as the Chinese had done, but gradually original Japanese styles developed.
Nabeshima ware is a type of Japanese pottery, specifically an unusually high-quality porcelain Arita ware. It was produced in Lord Nabeshima of Saga Domain's kiln at Okawachi near Arita in the Edo period, for the use and profit of the family. The name ther ...
was produced in kilns owned by the families of feudal lords, and were decorated in the Japanese tradition, much of it related to textile design. This was not initially exported, but used for gifts to other aristocratic families. Imari ware and Kakiemon are broad terms for styles of export porcelain with overglaze "enamelled" decoration begun in the early period, both with many sub-types. A great range of styles and manufacturing centres were in use by the start of the 19th century, and as Japan opened to trade in the second half, exports expanded hugely and quality generally declined. Much traditional porcelain continues to replicate older methods of production and styles, and there are several modern industrial manufacturers. By the early 1900s, Filipino porcelain artisans working in Japanese porcelain centres for much of their lives, later on introduced the craft into the native population in the
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, although oral literature from Cebu in the central Philippines have noted that porcelain were already being produced by the natives locally during the time of Cebu's early rulers, prior to the arrival of colonizers in the 16th century.


European porcelain

Imported Chinese porcelains were held in such great esteem in Europe that in English ''
china China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
'' became a commonly–used synonym for the Italian-derived ''porcelain''. The first mention of porcelain in Europe is in '' Il Milione'' by Marco Polo in the 13th century. Apart from copying Chinese porcelain in ''
faience Faience or faïence (; ) is the general English language term for fine tin-glazed pottery. The invention of a white pottery glaze suitable for painted decoration, by the addition of an oxide of tin to the slip of a lead glaze, was a major ...
'' ( tin glazed earthenware), the soft-paste Medici porcelain in 16th-century
Florence Florence ( ; it, Firenze ) is a city in Central Italy and the capital city of the Tuscany region. It is the most populated city in Tuscany, with 383,083 inhabitants in 2016, and over 1,520,000 in its metropolitan area.Bilancio demografico ...
was the first real European attempt to reproduce it, with little success. Early in the 16th century, Portuguese traders returned home with samples of kaolin, which they discovered in China to be essential in the production of porcelain wares. However, the Chinese techniques and composition used to manufacture porcelain were not yet fully understood. Countless experiments to produce porcelain had unpredictable results and met with failure. In the German state of
Saxony Saxony (german: Sachsen ; Upper Saxon German, Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a ...
, the search concluded in 1708 when Ehrenfried Walther von Tschirnhaus produced a hard, white, translucent type of porcelain specimen with a combination of ingredients, including kaolin and alabaster, mined from a Saxon mine in
Colditz Colditz () is a small town in the district of Leipzig, in Saxony, Germany. It is best known for Colditz Castle, the site of the Oflag IV-C POW camp for officers in World War II. Geography Colditz is situated in the Leipzig Bay, southeast of th ...
. It was a closely guarded trade secret of the Saxon enterprise. In 1712, many of the elaborate Chinese porcelain manufacturing secrets were revealed throughout Europe by the French Jesuit father Francois Xavier d'Entrecolles and soon published in the ''Lettres édifiantes et curieuses de Chine par des missionnaires jésuites''. The secrets, which d'Entrecolles read about and witnessed in China, were now known and began seeing use in Europe.Baghdiantz McAbe, Ina (2008). ''Orientalism in Early Modern France''. Oxford: Berg Publishing, p. 220.
Finley, Robert (2010). ''The pilgrim art. Cultures of porcelain in world history''. University of California Press, p. 18.
Kerr, R. & Wood, N. (2004).
Joseph Needham : Science and Civilisation in China, Volume 5 Chemistry and Chemical Technology : Part 12 Ceramic Technology
''. Cambridge University Press, p. 36-7.


Meissen

Von Tschirnhaus along with
Johann Friedrich Böttger Johann Friedrich Böttger (also Böttcher or Böttiger; 4 February 1682 – 13 March 1719) was a German alchemist. Böttger was born in Schleiz and died in Dresden. He is normally credited with being the first European to discover the secret of th ...
were employed by
Augustus II Augustus II; german: August der Starke; lt, Augustas II; in Saxony also known as Frederick Augustus I – Friedrich August I (12 May 16701 February 1733), most commonly known as Augustus the Strong, was Elector of Saxony from 1694 as well as Ki ...
, King of Poland and Elector of Saxony, who sponsored their work in
Dresden Dresden (, ; Upper Saxon: ''Dräsdn''; wen, label= Upper Sorbian, Drježdźany) is the capital city of the German state of Saxony and its second most populous city, after Leipzig. It is the 12th most populous city of Germany, the fourth ...
and in the town of Meissen. Tschirnhaus had a wide knowledge of science and had been involved in the European quest to perfect porcelain manufacture when, in 1705, Böttger was appointed to assist him in this task. Böttger had originally been trained as a pharmacist; after he turned to alchemical research, he claimed to have known the secret of transmuting dross into gold, which attracted the attention of Augustus. Imprisoned by Augustus as an incentive to hasten his research, Böttger was obliged to work with other alchemists in the futile search for transmutation and was eventually assigned to assist Tschirnhaus. One of the first results of the collaboration between the two was the development of a red stoneware that resembled that of Yixing. A workshop note records that the first specimen of hard, white and vitrified European porcelain was produced in 1708. At the time, the research was still being supervised by Tschirnhaus; however, he died in October of that year. It was left to Böttger to report to Augustus in March 1709 that he could make porcelain. For this reason, credit for the European discovery of porcelain is traditionally ascribed to him rather than Tschirnhaus. The Meissen factory was established in 1710 after the development of a kiln and a glaze suitable for use with Böttger's porcelain, which required firing at temperatures of up to to achieve translucence. Meissen porcelain was ''once-fired'', or ''green-fired''. It was noted for its great resistance to thermal shock; a visitor to the factory in Böttger's time reported having seen a white-hot teapot being removed from the kiln and dropped into cold water without damage. Although widely disbelieved this has been replicated in modern times.


Russian porcelain

In 1744, the
Elizabeth of Russia Elizabeth Petrovna (russian: Елизаве́та (Елисаве́та) Петро́вна) (), also known as Yelisaveta or Elizaveta, reigned as Empress of Russia from 1741 until her death in 1762. She remains one of the most popular Russian ...
signed an agreement to establish the first porcelain manufactory; previously it had to be imported. The technology of making "white gold" was carefully hidden by its creators. Peter the Great had tried to reveal the "big porcelain secret", and sent an agent to the Meissen factory, and finally hired a porcelain master from abroad. This relied on the research of the Russian scientist
Dmitry Ivanovich Vinogradov Dmitry Ivanovich Vinogradov (russian: Дмитрий Иванович Виноградов; 1720 – ) was a Russian chemist who developed Russian hard-paste porcelain; he was the founder of the Imperial Porcelain Factory. Vinogradov was b ...
. His development of porcelain manufacturing technology was not based on secrets learned through third parties, but was the result of painstaking work and careful analysis. Thanks to this, by 1760, Imperial Porcelain Factory, Saint Petersburg became a major European factories producing tableware, and later porcelain figurines. Eventually other factories opened: Gardner porcelain, Dulyovo (1832), Kuznetsovsky porcelain, Popovsky porcelain, and
Gzhel Gzhel is a Russian style of blue and white ceramics which takes its name from the village of Gzhel and surrounding area, where it has been produced since 1802. Overview About thirty villages located southeast of Moscow produce pottery and sh ...
. During the twentieth century, under Soviet governments, ceramics continued to be a popular artform, supported by the state, with an increasingly propagandist role. One artist, who worked at the Baranovsky Porcelain Factory and at the Experimental Ceramic and Artistic Plant in Kyiv, was
Oksana Zhnikrup Oksana Zhnikrup, Ukrainian: Оксана Жнікруп (1931 - 1993) was a Ukrainian ceramicist, whose works are held in the collection of the National Folk Decorative Art Museum. The sculpture '' Seated Ballerina'' by Jeff Koons is closely ...
, whose porcelain figures of the ballet and the circus were widely known.


Soft paste porcelain

The pastes produced by combining clay and powdered glass (
frit A frit is a ceramic composition that has been fused, quenched, and granulated. Frits form an important part of the batches used in compounding enamels and ceramic glazes; the purpose of this pre-fusion is to render any soluble and/or toxic com ...
) were called ''Frittenporzellan'' in Germany and ''frita'' in Spain. In France they were known as ''pâte tendre'' and in England as "soft-paste". They appear to have been given this name because they do not easily retain their shape in the wet state, or because they tend to slump in the kiln under high temperature, or because the body and the glaze can be easily scratched. ;France Experiments at Rouen produced the earliest soft-paste in France, but the first important French soft-paste porcelain was made at the Saint-Cloud factory before 1702. Soft-paste factories were established with the Chantilly manufactory in 1730 and at Mennecy in 1750. The Vincennes porcelain factory was established in 1740, moving to larger premises at Sèvres in 1756. Vincennes soft-paste was whiter and freer of imperfections than any of its French rivals, which put Vincennes/Sèvres porcelain in the leading position in France and throughout the whole of Europe in the second half of the 18th century. ;Italy
Doccia porcelain The Doccia porcelain manufactory, at Doccia, a ''frazione'' of Sesto Fiorentino, near Florence, was in theory founded in 1735 by marchese Carlo Ginori near his villa, though it does not appear to have produced wares for sale until 1746. It has ...
of
Florence Florence ( ; it, Firenze ) is a city in Central Italy and the capital city of the Tuscany region. It is the most populated city in Tuscany, with 383,083 inhabitants in 2016, and over 1,520,000 in its metropolitan area.Bilancio demografico ...
was founded in 1735 and remains in production, unlike
Capodimonte porcelain Capodimonte porcelain (sometimes "Capo di Monte") is porcelain created by the Capodimonte porcelain manufactory (''Real Fabbrica di Capodimonte''), which operated in Naples, Italy, between 1743 and 1759. Capodimonte is the most outstanding facto ...
which was moved from
Naples Naples (; it, Napoli ; nap, Napule ), from grc, Νεάπολις, Neápolis, lit=new city. is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 909,048 within the city's adm ...
to
Madrid Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a metropolitan area population of approximately 6.7 million. It is the second-largest city in the European Union (EU), and ...
by its royal owner, after producing from 1743 to 1759. After a gap of 15 years Naples porcelain was produced from 1771 to 1806, specializing in Neoclassical styles. All these were very successful, with large outputs of high-quality wares. In and around
Venice Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 small islands that are separated by canals and linked by over 400  ...
, Francesco Vezzi was producing hard-paste from around 1720 to 1735; survivals of
Vezzi porcelain Vezzi porcelain is porcelain made by the Vezzi porcelain factory in Venice, Italy, established in 1720 by the Vezzi family. It was the first porcelain factory in Italy, after the experimental Medici porcelain of the 16th century. It operated on ...
are very rare, but less so than from the Hewelke factory, which only lasted from 1758 to 1763. The soft-paste Cozzi factory fared better, lasting from 1764 to 1812. The Le Nove factory produced from about 1752 to 1773, then was revived from 1781 to 1802. ; England The first soft-paste in England was demonstrated by Thomas Briand to the
Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...
in 1742 and is believed to have been based on the Saint-Cloud formula. In 1749, Thomas Frye took out a
patent A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A ...
on a porcelain containing bone ash. This was the first
bone china Bone china is a type of ceramic that is composed of bone ash, feldspathic material, and kaolin. It has been defined as "ware with a translucent body" containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phos ...
, subsequently perfected by Josiah Spode.
William Cookworthy William Cookworthy (12 April 170517 October 1780) was an English Quaker minister, a successful pharmacist and an innovator in several fields of technology. He was the first person in Britain to discover how to make hard-paste porcelain, like t ...
discovered deposits of kaolin in
Cornwall Cornwall (; kw, Kernow ) is a Historic counties of England, historic county and Ceremonial counties of England, ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people ...
, and his factory at Plymouth, established in 1768, used kaolin and china stone to make hard-paste porcelain with a body composition similar to that of the Chinese porcelains of the early 18th century. But the great success of English ceramics in the 18th century was based on soft-paste porcelain, and refined earthenwares such as
creamware Creamware is a cream-coloured refined earthenware with a lead glaze over a pale body, known in France as '' faïence fine'', in the Netherlands as ''Engels porselein'', and in Italy as ''terraglia inglese''.Osborne, 140 It was created about 175 ...
, which could compete with porcelain, and had devastated the
faience Faience or faïence (; ) is the general English language term for fine tin-glazed pottery. The invention of a white pottery glaze suitable for painted decoration, by the addition of an oxide of tin to the slip of a lead glaze, was a major ...
industries of France and other continental countries by the end of the century. Most English porcelain from the late 18th century to the present is bone china. In the twenty-five years after Briand's demonstration, a number of factories were founded in England to make soft-paste tableware and figures: * Chelsea (1743) * Bow (1745) * St James's (1748) * Bristol porcelain (1748) *
Longton Hall Longton may refer to several places: * Longton, Kansas, United States * Longton, Lancashire, United Kingdom * Longton, Staffordshire Longton is one of the six towns which amalgamated to form the county borough of Stoke-on-Trent in 1910, alon ...
(1750) *
Royal Crown Derby The Royal Crown Derby Porcelain Company is the oldest or second oldest remaining English porcelain manufacturer, based in Derby, England (disputed by Royal Worcester, who claim 1751 as their year of establishment). The company, particularly know ...
(1750 or 1757) *
Royal Worcester Royal Worcester is a porcelain brand based in Worcester, England. It was established in 1751 and is believed to be the oldest or second oldest remaining English porcelain brand still in existence today, although this is disputed by Royal Crown D ...
(1751) *
Lowestoft porcelain The Lowestoft Porcelain Factory was a soft-paste porcelain factory on Crown Street (then Bell Lane) in Lowestoft, Suffolk, England, which was active from 1757 to 1802. It mostly produced "useful wares" such as pots, teapots, and jugs, with sh ...
(1757) *
Wedgwood Wedgwood is an English fine china, porcelain and luxury accessories manufacturer that was founded on 1 May 1759 by the potter and entrepreneur Josiah Wedgwood and was first incorporated in 1895 as Josiah Wedgwood and Sons Ltd. It was rapid ...
(1759) * Spode (1767)


Other uses


Electric insulating material

Porcelain and other ceramic materials have many applications in engineering, especially ceramic engineering. Porcelain is an excellent insulator for use with high voltages, especially in outdoor applications (see Insulator (electricity)#Material). Examples include: terminals for high-voltage cables, bushings of power transformers, and insulation of high-frequency antennas.


Building material

Porcelain can be used as a
building material Building material is material used for construction. Many naturally occurring substances, such as clay, rocks, sand, wood, and even twigs and leaves, have been used to construct buildings. Apart from naturally occurring materials, many man- ...
, usually in the form of tiles or large rectangular panels. Modern porcelain tiles are generally produced by a number of recognised international standards and definitions. Manufacturers are found across the world with Italy being the global leader, producing over 380 million square metres in 2006. Historic examples of rooms decorated entirely in porcelain tiles can be found in several European palaces including ones at Galleria Sabauda in
Turin Turin ( , Piedmontese language, Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital ...
, Museo di Doccia in Sesto Fiorentino, Museo di Capodimonte in Naples, the Royal Palace of Madrid and the nearby
Royal Palace of Aranjuez The Royal Palace of Aranjuez ( es, Palacio Real de Aranjuez) is one of the official residences of the Spanish royal family. It is located in the town of Aranjuez (Madrid), Spain. Established in the 16th century as a royal hunting lodge, the pala ...
. and the
Porcelain Tower of Nanjing The Porcelain Tower of Nanjing, part of the former Great Bao'en Temple, is a historical site located on the south bank of external Qinhuai River in Nanjing, China. It was a pagoda constructed in the 15th century during the Ming dynasty, but was ...
. More recent noteworthy examples include the Dakin Building in Brisbane, California, and the Gulf Building in Houston, Texas, which when constructed in 1929 had a porcelain logo on its exterior.“Porcelain Tile: The Revolution Is Only Beginning.” Tile Decorative Surf. 42, No.11, 1992.


Bathroom fittings

Because of its durability, inability to rust and impermeability, glazed porcelain has been in use for personal hygiene since at least the third quarter of the 17th century. During this period, porcelain chamber pots were commonly found in higher-class European households, and the term "bourdaloue" was used as the name for the pot. However bath tubs are not made of porcelain, but of porcelain enamel on a metal base, usually of
cast iron Cast iron is a class of iron– carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impuri ...
. Porcelain enamel is a
marketing Marketing is the process of exploring, creating, and delivering value to meet the needs of a target market in terms of goods and services; potentially including selection of a target audience; selection of certain attributes or themes to emph ...
term used in the US, and is not porcelain but
vitreous enamel Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between . The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word comes from the Lati ...
.


Dental porcelain

Dental porcelain Dental porcelain (also known as dental ceramic) is a dental material used by dental technicians to create biocompatible lifelike dental restorations, such as crowns, bridges, and veneers. Evidence suggests they are an effective material as they ...
is used for crowns, bridges and veneers.


Manufacturers

* The Americas ** Brazil *** Germer Porcelanas Finas *** Porcelana Schmidt **
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
*** Blue Ridge ***
CoorsTek CoorsTek, Inc. is a privately owned manufacturer of technical ceramics for aerospace, automotive, chemical, electronics, medical, metallurgical, oil and gas, semiconductor and many other industries. CoorsTek headquarters and primary factories a ...
, Inc. ***
Franciscan , image = FrancescoCoA PioM.svg , image_size = 200px , caption = A cross, Christ's arm and Saint Francis's arm, a universal symbol of the Franciscans , abbreviation = OFM , predecessor = , ...
*** Lenox *** Lotus Ware *** Pickard China * Asia ** China *** Ding ware ***
Jingdezhen porcelain Jingdezhen porcelain () is Chinese porcelain produced in or near Jingdezhen in Jiangxi province in southern China. Jingdezhen may have produced pottery as early as the sixth century CE, though it is named after the reign name of Emperor Zhenz ...
** Iran *** Maghsoud Group of Factories, (1993–present) *** Zarin Iran Porcelain Industries, (1881–present) ** Japan ***
Hirado ware is a type of Japanese porcelain mostly made at kilns at Mikawachi, Sasebo, Nagasaki, and it is therefore also known as . It was made in the former feudal Hirado Domain, which owned the kilns, and was responsible for establishing and directing ...
*** Kakiemon ***
Nabeshima ware is a type of Japanese pottery, specifically an unusually high-quality porcelain Arita ware. It was produced in Lord Nabeshima of Saga Domain's kiln at Okawachi near Arita in the Edo period, for the use and profit of the family. The name ther ...
*** Narumi *** Noritake *** Schmid Kreglinger **
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Mal ...
***
Royal Selangor Royal Selangor International Sdn Bhd (doing business as Royal Selangor) is a Malaysian pewter manufacturer and retailer, the largest of its type in the world. History Founded in 1885 by Yong Koon () in his little shop called Ngeok Foh (Jade Peace) ...
** South Korea *** Haengnam Chinaware *** Hankook Chinaware ** Sri Lanka *** Dankotuwa Porcelain *** Noritake Lanka Porcelain *** Royal Fernwood Porcelain ** Taiwan *** Franz Collection ** Turkey *** Yildiz Porselen (1890–1936, 1994–present) *** Kütahya Porselen (1970–present) *** Güral Porselen (1989–present) *** Porland Porselen (1976–present) *** Istanbul Porselen (1963 – early 1990s) *** Sümerbank Porselen (1957–1994) **
United Arab Emirates The United Arab Emirates (UAE; ar, اَلْإِمَارَات الْعَرَبِيَة الْمُتَحِدَة ), or simply the Emirates ( ar, الِْإمَارَات ), is a country in Western Asia (Middle East, The Middle East). It is ...
*** RAK Porcelain ** Vietnam *** Minh Long I porcelain (1970–present) *** Bát Tràng porcelain (1352–present) *
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
** Austria ***
Vienna Porcelain Manufactory Vienna porcelain is the product of the Vienna Porcelain Manufactory (German: ''Kaiserlich privilegierte Porcellain Fabrique''), a porcelain manufacturer in Alsergrund in Vienna, Austria. It was founded in 1718 and continued until 1864. The firm wa ...
, 1718–1864 *** Vienna Porcelain Manufactory Augarten, 1923–present ** Croatia *** Inkerpor (1953–present) **
Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
*** Haas & Czjzek, Horní Slavkov (1792–2011) *** Thun 1794, Klášterec nad Ohří (1794–present) *** Český porcelán a.s.,
Dubí Dubí (; german: Eichwald) is a spa town in Teplice District in the Ústí nad Labem Region of the Czech Republic. It has about 7,800 inhabitants. Administrative parts Town parts and villages of Běhánky, Bystřice, Cínovec, Drahůnky, Mstišov ...
, Eichwelder Porzellan und Ofenfabriken Bloch & Co. Böhmen (1864–present) *** Rudolf Kämpf, Nové Sedlo (Sokolov District) (1907–present) ** Denmark ***
Aluminia Aluminia was a Danish factory of faience or earthenware pottery, established in Copenhagen in 1863. (1838-1922) was the founding owner of the Aluminia factory in Christianshavn. In 1882, the owners of Aluminia purchased the Royal Copenhagen ...
***
Bing & Grøndahl Bing & Grøndahl was a Danish porcelain manufacturer founded in 1853 by the sculptor Frederik Vilhelm Grøndahl and merchant brothers Meyer Hermann Bing and Jacob Herman Bing. The trademark backstamp for Bing & Grøndahl (B&G) porcelains is the t ...
*** Denmark porcelain *** P. Ipsens Enke *** Kastrup Vaerk *** Kronjyden *** Porcelænshaven *** Royal Copenhagen (1775–present) *** GreenGate ** Finland ***
Arabia The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Pl ...
** France ***
Saint-Cloud porcelain Saint-Cloud porcelain was a type of soft-paste porcelain produced in the French town of Saint-Cloud from the late 17th to the mid 18th century. Foundation In 1702, Philippe I, Duke of Orléans gave letters-patent to the family of Pierre Chicane ...
(1693–1766) *** Chantilly porcelain (1730–1800) *** Vincennes porcelain (1740–1756) *** Mennecy-Villeroy porcelain (1745–1765) *** Sèvres porcelain (1756–present) *** Revol porcelain (1789–present) *** Limoges porcelain *** Haviland porcelain ** Germany *** Current porcelain manufacturers in Germany ** Hungary *** Hollóháza Porcelain Manufactory (1777–present) *** Herend Porcelain Manufacture (1826–present) *** Zsolnay Porcelain Manufacture (1853–present) ** Italy *** Richard-Ginori 1735 Manifattura di Doccia (1735–present) ***
Capodimonte porcelain Capodimonte porcelain (sometimes "Capo di Monte") is porcelain created by the Capodimonte porcelain manufactory (''Real Fabbrica di Capodimonte''), which operated in Naples, Italy, between 1743 and 1759. Capodimonte is the most outstanding facto ...
(1743–1759) *** Naples porcelain (1771–1806) ***
Manifattura Italiana Porcellane Artistiche Fabris The Manifattura Italiana Porcellane Artistiche Fabris was created by sculptor Luigi Fabris from Bassano del Grappa who, after acquiring Raffaele Passarin's pottery factory in Bassano, made the ceramic facade of Grand Hotel Ausonia & Hungaria at L ...
(1922–1972) *** Mangani SRL, Porcellane d'Arte (
Florence Florence ( ; it, Firenze ) is a city in Central Italy and the capital city of the Tuscany region. It is the most populated city in Tuscany, with 383,083 inhabitants in 2016, and over 1,520,000 in its metropolitan area.Bilancio demografico ...
) ** Lithuania *** Jiesia **
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
*** Haagsche Plateelbakkerij, Rozenburg *** Loosdrechts Porselein *** Weesp Porselein ** Norway *** Egersund porcelain *** Figgjo (1941–present) *** Herrebøe porcelain ***
Porsgrund Porsgrund Porcelain Factory (''Porsgrunds Porselænsfabrik'', abbreviated PP) is a porcelain flatware company located at Porsgrunn in Telemark county, Norway. History The company's production plant is a popular tourist attraction. The company wa ...
*** Stavangerflint ** Poland *** AS Ćmielów *** Fabryka Fajansu i Porcelany *** Polskie Fabryki Porcelany "Ćmielów" i "Chodzież" S.A. *** Kristoff Porcelana *** Lubiana S.A. ** Portugal *** Vista Alegre *** Sociedade Porcelanas de Alcobaça *** Costa Verde (company), located in the district of Aveiro ** Russia *** Imperial Porcelain Factory, Saint Petersburg (1744–present) *** Verbilki Porcelain (1766–present), Verbilki near Taldom *** Gzhel ceramics (1802–present),
Gzhel Gzhel is a Russian style of blue and white ceramics which takes its name from the village of Gzhel and surrounding area, where it has been produced since 1802. Overview About thirty villages located southeast of Moscow produce pottery and sh ...
*** Dulevo Farfor (1832–present),
Likino-Dulyovo Likino-Dulyovo (russian: Ликино́-Дулёво) is a town in Orekhovo-Zuyevsky District of Moscow Oblast, Russia, located northeast of Moscow. Population: The village of Dulyovo has grown around the Dulyovo porcelain works. The urban-t ...
** Spain *** Buen Retiro Royal Porcelain Factory (1760–1812) *** Real Fábrica de Sargadelos (1808–present, intermittently) *** Porvasal ** Sweden *** Rörstrand ***
Gustavsberg porcelain Gustavsberg is a Swedish porcelain company that originated in 1826.Helena Dahlbäck Lutteman. ''Svenskt Porslin 1700-1900'' It broke up in the 1990s and was sold off in pieces, to the dismay of residents of the Gustavsberg area, but artisans conti ...
** Switzerland *** Suisse Langenthal ** United Kingdom *** Aynsley China (1775–present) *** Belleek (1884–present) *** Bow porcelain factory (1747–1776) *** Caughley porcelain *** Chelsea porcelain factory (c. 1745; merged with Derby in 1770) ***
Coalport porcelain Coalport, Shropshire, England was a centre of porcelain and pottery production between about 1795 ("inaccurately" claimed as 1750 by the company) and 1926, with the Coalport porcelain brand continuing to be used up to the present. The opening i ...
***
Davenport Davenport may refer to: Places Australia *Davenport, Northern Territory, a locality *Hundred of Davenport, cadastral unit in South Australia **Davenport, South Australia, suburb of Port Augusta ** District Council of Davenport, former local govern ...
***
Goss crested china Goss crested china is typically in the form of small white glazed porcelain models, made from 1858 to 1939, carrying the coat of arms of the place where they were sold as a souvenir, thus being a form of model heraldic china. Other factories, ...
***
Liverpool porcelain Liverpool porcelain is mostly of the Soft-paste porcelain, soft-paste porcelain type and was produced between about 1754 and 1804 in various factories in Liverpool. Tin-glazed English delftware had been produced in Liverpool from at least 1710 at ...
*** Longton Hall porcelain ***
Lowestoft Porcelain Factory The Lowestoft Porcelain Factory was a soft-paste porcelain factory on Crown Street (then Bell Lane) in Lowestoft, Suffolk, England, which was active from 1757 to 1802. It mostly produced "useful wares" such as pots, teapots, and jugs, with sh ...
*** Mintons Ltd (1793–1968; merged with Royal Doulton) ***
Nantgarw Pottery The Nantgarw China Works was a porcelain factory, later making other types of pottery, located in Nantgarw on the eastern bank of the Glamorganshire Canal, north of Cardiff in the River Taff valley, Glamorganshire, Wales. The factory made porce ...
***
New Hall porcelain New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator ...
*** Plymouth Porcelain *** Rockingham Pottery ***
Royal Crown Derby The Royal Crown Derby Porcelain Company is the oldest or second oldest remaining English porcelain manufacturer, based in Derby, England (disputed by Royal Worcester, who claim 1751 as their year of establishment). The company, particularly know ...
(1750/57–present) *** Royal Doulton (1815–2009; acquired by Fiskars) ***
Royal Worcester Royal Worcester is a porcelain brand based in Worcester, England. It was established in 1751 and is believed to be the oldest or second oldest remaining English porcelain brand still in existence today, although this is disputed by Royal Crown D ...
(1751–2008; acquired by Portmeirion Pottery) *** Spode (1767–2008; acquired by Portmeirion Pottery) *** Saint James's Factory (or "Girl-in-a-Swing", 1750s) *** Swansea porcelain *** Vauxhall porcelain ***
Wedgwood Wedgwood is an English fine china, porcelain and luxury accessories manufacturer that was founded on 1 May 1759 by the potter and entrepreneur Josiah Wedgwood and was first incorporated in 1895 as Josiah Wedgwood and Sons Ltd. It was rapid ...
, (factory 1759–present, porcelain 1812–1829, and modern. Acquired by Fiskars)


See also

* Blue and white porcelain * List of porcelain manufacturers * Lithophane * Sea pottery


Notes


References

* Battie, David, ed., ''Sotheby's Concise Encyclopedia of Porcelain'', 1990, Conran Octopus. * Le Corbellier, Clare
''Eighteenth-century Italian porcelain''
1985,
Metropolitan Museum of Art The Metropolitan Museum of Art of New York City, colloquially "the Met", is the largest art museum in the Americas. Its permanent collection contains over two million works, divided among 17 curatorial departments. The main building at 1000 ...
, (fully available online as PDF) * Smith, Lawrence, Harris, Victor and Clark, Timothy, ''Japanese Art: Masterpieces in the British Museum'', 1990, British Museum Publications, * Vainker, S.J., ''Chinese Pottery and Porcelain'', 1991, British Museum Press, 9780714114705 * Watson, William ed., ''The Great Japan Exhibition: Art of the Edo Period 1600–1868'', 1981, Royal Academy of Arts/Weidenfeld & Nicolson


Further reading

* Burton, William (1906)
''Porcelain, Its Nature, Art and Manufacture''
London: Batsford. * ''Combined Nomenclature of the European Communities'' – EC Commission in Luxembourg, 1987. * * * Valenstein, S. (1998).
A Handbook of Chinese ceramics
', Metropolitan Museum of Art, New York. .


External links







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