Pyrolytic chromium carbide coating (PCC) is a technology for protection and reworking of rapidly wearing parts of manufacturing equipment working in extreme environmental conditions, using
vacuum deposition technology. Coating mechanical parts can help with problems of
corrosion
Corrosion is a natural process that converts a refined metal into a more chemically stable oxide. It is the gradual deterioration of materials (usually a metal) by chemical or electrochemical reaction with their environment. Corrosion engine ...
, adhering, high-temperature and mechanical
wear
Wear is the damaging, gradual removal or deformation of material at solid surfaces. Causes of wear can be mechanical (e.g., erosion) or chemical (e.g., corrosion). The study of wear and related processes is referred to as tribology.
Wear in ...
thus reducing unplanned repairs and loss of production.
The features of PCC coatings are:
* obtaining protective layers with high adhesion strength on parts and products made of various engineering materials including metal and non-metal materials withstanding deposition conditions (up to 500 °C, 0.1 Pa);
* applying coatings on internal and external surfaces of longs shafts, complex-geometry parts with dead holes, grooves and channels, providing uniform thickness and composition;
* coating finished surfaces with no through porosity at small thickness (3–5 micrometres)
* PCC coating process runs in vacuum at 450 to 500 °C.
Fields of application
Protection of instruments and machinery parts surface exposed to simultaneous impact of corrosion, erosion, sealing, pickup, high temperature, abrasive and mechanical wear.
External links
Pyrolytic chromium carbide Coating obtained from ''Bahros'' chrome-organic fluidWear-resistive properties of PCC Coating{dead link, date=April 2018 , bot=InternetArchiveBot , fix-attempted=yes
Coatings