What is pvd treatment - glossary
PVD is the acronym for Physical Vapor Deposition.
PVD is the acronym for Physical Vapor Deposition. A coating is generated by evaporating metals that make up the coating layer obtained.
The conveyance from the target (metal source) to the work pieces to be coated is performed using a gas or plasma, which is an ionized gas at low pressure.
Deposition is promoted by the presence of an electric field.
There are various PVD techniques and these are divided into solid target, this is the case for cathodic deposition such as using an arc or sputtering, or molten target, when evaporation is caused by the Joule effect or with electric guns.
The “droplets” effect indicates the presence in the deposited layer of tiny beads of material after evaporation that have coalesced in a non-atomic form, creating the only defect for this technology.
Sputtering is a cathode pulverization, that is a process in which there is the emission of atoms, molecular fragments from a solid material, called the target, which is bombarded by a beam of energy particles (generally ions).
Zinc Nitride (ZrN)
Zinc Nitride (ZrN) is one of the best known PVD coatings, both for decoration and for chip removal and die casting. The main characteristics of this coating are its high hardness and low friction coefficient. Furthermore, Zinc Nitride meets the requirements of ISO 10933 (biocompatibility) and FDA (Food Drugs Administration) standards.
Titanium Nitride (TiN)
Titanium Nitride (TiN) has been present on the market for decades and is still a highly important PVD coating. TiN has always been a reference in the field of chip removal but its properties are very interesting in many fields of application. TiN meets ISO 10993 (biocompatibility) and FDA (Food Drugs Administration) standards; in fact, this coating is an excellent solution in the medical branch as well as in the automatic machine industry and for mechanical parts.
Titanium Carbo-Nitride (TiCN)
Titanium Carbo-Nitride (TiCN) is the evolution of TiN, which inherits its highly appreciated qualities and improves some characteristics, such as hardness, which is 50% greater than that of TiN, guaranteeing higher and improved wear resistance. TiCN complies with FDA (Food Drugs Administration) standards.
Chrome Nitride (CrN) is an excellent coating for corrosion resistance. Where deposited, it creates an extraordinary barrier against chemical attack and oxidation. The low friction coefficient of this coating reduces the phenomena of gripping between sliding surfaces. Furthermore, with an optimum resistance to thermal loads, CrN can be deposited at low temperatures (to 180 °C), expanding its application to a wide variety of different materials. Chrome Nitride is accepted by the FDA (Food Drugs Administration).