ABSTRACT TiC/TiCN/TiN multilayer coating was prepared on a high-speed tool steel W6Mo5Cr4V2 by chemical vapour deposition. The tribological performance and behaviour of the coating were investigated at an elevated temperature of 400–600°C. Results show that the friction coefficient of the coating first decreases from 0.39 to 0.08 and then increases from 0.08 to 0.23 with the increase in temperature, while the average wear rate increases continuously from 0.97 × 10−13 to 2.11 × 10−13 m3N−1m−1. The tribochemical product of Fe2O3 in the tribo-oxidative layer (TiO2 + Fe2O3) could reduce the coating friction coefficient but enlarge the wear rate. As the Fe2O3 component increases, the consumption of the tribo-oxidative layer accelerates gradually and the coating wear mechanism transforms from the mild oxidative–abrasive–adhesive wear to severe oxidative–adhesive wear.

中文翻译：

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CVD TiC/TiCN/TiN多层涂层在高温下的摩擦学性能和行为

摘要 采用化学气相沉积在高速工具钢 W6Mo5Cr4V2 上制备了 TiC/TiCN/TiN 多层涂层。在 400-600°C 的高温下研究了涂层的摩擦学性能和行为。结果表明，涂​​层的摩擦系数随着温度的升高先从0.39降低到0.08，然后从0.08增加到0.23，而平均磨损率从0.97×10-13不断增加到2.11×10-13 m3N-1m -1。摩擦氧化层中Fe2O3的摩擦化学产物(TiO2+Fe2O3)可以降低涂层摩擦系数但增大磨损率。随着 Fe2O3 成分的增加，