engleski

Influence of steel substrate on the properties of PACVD gradient multilayer TiCN coating

Ti-based hard coatings are well known for increasing both hot work and cold work tool steel performance in terms of wear and corrosion resistance. In this paper influence of different steel substrates on the properties of PACVD gradient multilayer TiCN coating was investigated. The same gradient multilayer TiCN coating was deposited by pulsed direct current (DC) plasma assisted chemical vapour deposition (PACVD) on hot work tool steel grade X37CrMoV5- 1 and two Böhler cold work tool steels K390 PM and K110. A hardened samples of each steel were also included in the investigation. The coating-substrate systems have been characterized with respect to their chemical composition, thickness, adhesion and resistance to electrochemical corrosion, abrasion, erosion and dry sliding wear. The results show an increased wear and corrosion resistance of TiCN coated specimens compared with non-coated and pre-hardened ones. The application of gradient multilayer TiCN coating on different steel substrates show different behaviour of TiCN coating. Therefore, except coating itself, base material on which the coating is applied has a significant influence on the tool properties.

PACVD, TiCN coating, gradient, multilayer, wear

nije evidentirano