metallurgy Metallurgy is a domain of materials science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are known as alloys. Metallurgy encompasses both the ...

, titanium gold (Ti-Au or Au-Ti) refers to an

alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...

consisting of

titanium Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...

and

gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...

. Such alloys are used in

dentistry Dentistry, also known as dental medicine and oral medicine, is the branch of medicine focused on the Human tooth, teeth, gums, and Human mouth, mouth. It consists of the study, diagnosis, prevention, management, and treatment of diseases, dis ...

ceramics 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, porce ...

and

jewelry Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, ring (jewellery), rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the ...

. Like many other alloys, titanium gold alloys have a higher yield strength,

tensile strength Ultimate tensile strength (also called UTS, tensile strength, TS, ultimate strength or F_\text in notation) is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials, the ultimate ...

hardness In materials science, hardness (antonym: softness) is a measure of the resistance to plastic deformation, such as an indentation (over an area) or a scratch (linear), induced mechanically either by Pressing (metalworking), pressing or abrasion ...

, and

magnetism Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, ...

than either of its constituent metals. In July 2016, researchers led by Emilia Morosan at

Rice University William Marsh Rice University, commonly referred to as Rice University, is a Private university, private research university in Houston, Houston, Texas, United States. Established in 1912, the university spans 300 acres. Rice University comp ...

discovered that a titanium-gold alloy, β-Ti₃Au, is an intermetallic alloy that is up to 4 times harder than pure titanium and most steels.

In popular culture

In the 2008 film ''

Iron Man Iron Man is a superhero appearing in American comic books published by Marvel Comics. Co-created by writer and editor Stan Lee, developed by scripter Larry Lieber, and designed by artists Don Heck and Jack Kirby, the character first appearan ...

'', the

title character The title character in a narrative work is one who is named or referred to in the title of the work. In a performed work such as a play or film, the performer who plays the title character is said to have the title role of the piëce. The title o ...

wears an armor made from a titanium-gold alloy. According to actor

Robert Downey Jr. Robert John Downey Jr. (born April 4, 1965), also known as RDJ, is an American actor. One of the highest-grossing actors of all time, his films as a leading actor have grossed over $14 billion worldwide. In 2008, Downey was named by ''Time ...

, who played the role of

, the suit fit him "like a gold-titanium glove".http://www.theinsider.com/news/842818_Robert_Downey_Jr._Says_Iron_Man_Suit_Fits_Him_Like_Gold_Titanium_Gold In the 2019 book '' The Secret Commonwealth'' (part of the universe of

His Dark Materials ''His Dark Materials'' is a trilogy of fantasy novels by Philip Pullman consisting of '' Northern Lights'' (1995; published as ''The Golden Compass'' in North America), '' The Subtle Knife'' (1997), and '' The Amber Spyglass'' (2000). It follo ...

trilogy), the alethiometer is revealed to be made primarily of a titanium-gold alloy. In S6:E22 of ''

The Blacklist ''The Blacklist'' is an American crime thriller television series created by Jon Bokenkamp and developed by John Eisendrath. It stars James Spader as Raymond Reddington, an international criminal and one of the FBI's Most Wanted fugitives ...

'' the show’s computer wizz, Aram Mojtabai, comments that the cage originally created to house Reddington is made of titanium gold alloy.

References

{{reflist Titanium alloys Precious metal alloys

In popular culture

See also

References