METHOD OF MOUNTING OBJECTS FOR CHEMICAL VAPOUR DEPOSITION

摘要

A method of coating a surface of an article with a chemical vapour deposition coating such as a diamond like carbon by, for example, pulse DC PACVD or RF PACVD, comprising providing an active electrode, shielding the active electrode with a dielectric shield having at least one aperture to permit access to the active electrode, closing the aperture with a dielectricly shielded support post comprising an electively conductive core in electrical communication via the aperture with the active electrode, placing an article to be coated on the dielectricly shielded support post in electrical communication with the electively conductive core and applying a plasma to the article in presence of an electrical current to the article to provide a coating. The article may be, for example, a piston. A contiguous array of a plurality of similar articles may be simultaneously coated by the method.