![]() The selection of the underlayer depends on various factors such as hardness of the component surface (substrate), bonding characteristics with the substrate, load bearing requirements of the application, etc. Is DLC directly applied to component surfaces?ĭLC coatings are generally applied after a PVD underlayer such as Ti, Cr, CrN or WCC or a combination of them has first been deposited on the component surface.Unlike PVD method that involves physically depositing the solid target material source on the component surface, PACVD on the other hand involves a precursor gas source (hydrocarbon) that is broken down into carbon and hydrogen atoms in plasma, deposited as DLC on the component surface in an amorphous fashion. it does not have a crystal structure, however, offers combined advantages in spite of its overall random arrangement of carbon atoms.ĭLC coatings are deposited using a Plasma Assisted Chemical Vapor Deposition (PACVD) method. This is a special family of thin-film coatings that provide the high hardness like diamond (due to its tetragonal structure) and low lubricity like graphite (due to its hexagonal structure). What are PVD Coatings? DLC Coatings: Processing Details & ApplicationsĭLC stands for Diamond-Like Carbon.
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