Characterization and analysis of a multilayer coating with DLC as top layer

Abstract

In this work a DLC multilayer coating produced for the first time in Argentina, is analyzed. It is deposited using PVD PEMS. The first layer is made of AlTiN and the outer layer is a chrome-doped hydrogenated amorphous carbon (DLC), which gives it an excellent tribological behavior, with a very low friction coefficient and good wear resistance. Ion nitriding is used as a pretreatment, which significantly improves adhesion to the substrate, but makes no difference on the resistance to sliding contact wear with the used testing parameters.