利用辉光离子渗的方法,在 TC4 钛合金表面首先沉积 Mo 耐磨涂层,然后对渗 Mo 层在 650 ℃ 进行渗 S 处理,研究了渗 Mo 渗 S 复合涂层的表面结构、硬度和磨损性能。 结果表明:Mo 层渗 S 后,表面组织细化,硬度降低;渗 Mo 渗 S 复合涂层表面形成相以具有润滑作用的 MoS₂ 为主,另外还有少量 Mo₂C 和 Ti₂S 相;渗 Mo渗 S 涂层的磨损速率约为 TC4 的 1 / 10 。

The Mo coatings prepared by glow plasma deposition on TC4 titanium alloy were sulfurized at 650 ℃ . Microstructure, hardness and tribological properties of the sulfurized Mo coatings were studied. The results reveal that the surface microstructure of the original Mo coating is refined and the surface hardness reduces after sulfuration treatment . The composites formed on the substrate surface are mainly MoS₂and some Mo₂C and Ti₂S. The wear rate of the coating is about 1 / 10 of the TC4 wear rate.