What is PACVD coating technology?

PACVD coating is the abbreviation of Plasma Assisted Chemical Vapour Deposition. The term PECVD coating is also used; E stands for Enhanced. Whereas in a PVD coating process the materials are evaporated from a solid form, in PACVD coating it results from a gas phase. A gas, such as HMDSO (hexamethyl-disiloxane) can be cracked at a temperature of approximately 200ºC when a plasma is used. A non-reactive gas, such as argon is used to carry the ions to the product and grow a micro-thin layer of PACVD coating on it. DLC coating (Diamond Like Carbon) is an example of a PACVD coating used in tribological coatings, e.g. as an engine-coating for automotive components to make the component wear resistant and achieve friction reduction. 

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