What is PACVD Coating Technology?

PACVD coating is the abbreviation of Plasma Assisted Chemical Vapour Deposition.

PECVD Coating Technology
The term PECVD coating is also used; E for Enhanced. Whereas in a PVD coating process the materials are evaporated from a solid form, in PACVD the coating results from a gas phase. In order to build carbon (diamond) coatings, acetylene (C₂H₂) or for silicium-containing coatings HMDSO (hexa-methyl-disiloxan) can be added. These gasses can be cracked in the plasma to become available for the coating.

DLC coating
An example of a PACVD coating is DLC coating (Diamond Like Carbon). It is used as a tribological coating, e.g. as an engine-coating for automotive components to make the component wear resistant and achieve friction reduction. Or it can be used as a tool coating, due to its anti-sticking properties very suitable for the machining of cast and wrought aluminium and plastic injection moulds.

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