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1998
Journal Article
Titel
Properties of duplex coatings prepared by plasma nitriding and PVD Ti-C:H deposition on X20Cr13 ferritic stainless steel
Abstract
Duplex-coating procedures consisting of plasma nitriding and Me-C:H hard coating lead to animproved performance of the devices because the Me-C:H coating is supported by the nitrided phase and, therefore, the "eggshell-effect" is avoided. Furthermore, this support leads to a higherload-bearing capacity of the thin film. Two standard procedures (classical high-pressure plasmanitriding and unbalanced magnetron sputtering of Ti-C:H) were performed subsequently toprepare the duplex coatings on X20Cr13 ferritic stainless steel. The corrosion resistance of thesteel could be improved by nitriding at 450 degrees C compared to the untreated ferriticsubstrate. The roughness is determined by the nitriding step. The weakest point of the coatingis the transition zone between the nitreded and the untreated substrate and not the interface between the Ti-C:H c.