PVD Coatings with High EPA Ratings
PVD coatings are coatings made by a process called physical vapor deposition. They are methods of coating surfaces by the condensation of the vaporized form of the coating material. Coating metal with copper, chromium, nickel or cadmium uses an electroplating process. This process uses toxic substances such as cyanide during the plating process. Contaminated wastewater and solids are byproducts of this process.
What Is PVD?
Newer technologies meet the higher EPA (Environmental Protection Agency) standards by reducing the contamination of wastewater and eliminating the use of toxic substances. One class of these technologies is physical vapor deposition.
Types of PVD Coatings
Some of the types of PVD coatings are evaporative deposition, electron beam deposition, and flash deposition. With electron beam deposition an electron beam provides the heat. Flash deposition uses a fine wire made out of the coating material which comes in contact with a hot ceramic it evaporates. Resistance evaporation is the process of passing a large current through a wire containing the coating material.
PVD coatings are used on cutting tools, metal films, and even implant-grade body jewelry. They are used in the aerospace industry, automotive industry, for surgical and medical tools and devices, and to coat scientific tools and firearms.