||In this study, the three coating types, TiN, TiSiN, and TiN/TiSiN were separately deposited on SUS 304 and SUS 430 stainless steel substrates by cathodic arc deposition (CAD) system. And then the coated specimens were performed heat treatment at 700 oC for 1 h. Coating structure was analyzed and some functional tests such as ball-on-disc wear tests, erosion tests, immersion tests, and salt spray tests were all conducted for exploring the effects of the post heat treatment on wear resistance, erosion resistance, and corrosion resistance of the coated SUS 304 and SUS 430 stainless steels.
The experimental results showed that the TiN/TiSiN multilayer coating had a dense multilayered structure, well adhesion, high elastic modulus, and high hardness up to 44 GPa. Such the coating could effectively improve the wear resistance, erosion resistance, and corrosion resistance of both SUS 304 and SUS 430 stainless steels. In particular, the TiN/TiSiN multilayer coated on SUS 304 stainless steel had the lowest friction coefficient (0.38) among all the coated specimens.