For the needs of the key moving parts of SUS304 steel in extreme environments, the composite coatings (Co-Ti₃SiC₂/Cu) were successfully fabricated by laser cladding. The tribological behaviors of three coatings at room temperature and 600 °C were systematically studied. Results indicated that the microhardness of the three coatings was 1.2–1.8 times higher than the SUS304 substrate. With the addition of the Ti₃SiC₂ and Cu, the coating had good tribological capabilities, especially the anti-wear at room temperature was increased by 96%, and the friction reduction at 600 °C was increased by 73%, even it was found that Cu could promote the lubrication of Ti₃SiC₂. The wear of the three coatings changed from severe plastic deformation to slight oxidative adhesive wear.

针对SUS304钢关键运动部件在极端环境下的需求，激光熔覆成功制备了复合涂层（Co-Ti ₃ SiC ₂ /Cu）。系统研究了三种涂层在室温和 600 ℃下的摩擦学行为。结果表明，三种涂层的显微硬度比SUS304基材高1.2-1.8倍。加入Ti ₃ SiC ₂和Cu后，涂层具有良好的摩擦性能，尤其是室温抗磨性能提高96%，600℃减摩性能提高73%，甚至发现Cu可以促进Ti ₃ SiC ₂的润滑. 三种涂层的磨损由剧烈的塑性变形转变为轻微的氧化粘着磨损。