AlCrN/硅系陶瓷在大气、海水环境下的摩擦学性能

采用多弧离子镀技术在316L不锈钢基底上沉积AlCrN涂层.通过扫描电子显微镜（SEM）、X射线衍射仪(XRD)、纳米压痕仪等分析测试手段，对镀层的形貌、成分、相结构、硬度等进行表征，并利用摩擦磨损实验机Rtec考察AlCrN/陶瓷（Si₃N₄、SiC）在大气、海水环境下的摩擦学性能.结果表明:在大气、海水环境下，AlCrN/SiC的摩擦系数和磨损率都远小于AlCrN/Si₃N₄；SiC球表面的微观凹坑对氧化膜SiO₂起到收纳作用，同时减少磨粒磨损.较之于Si₃N₄陶瓷配副，AlCrN涂层与SiC陶瓷对磨时表现出更为优异的摩擦学性能. 

Tribological performance of AlCrN coating sliding against Si-based ceramic balls in ambient air and seawater conditions

AlCrN coatings were deposited on 316L stainless steel substrates by the multi-arc plating technique. Composition, morphology, phase and hardness of the AlCrN coatings were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and nano-indenter tester. The tribological performance of AlCrN coatings sliding against the Si₃N₄ and SiC ceramic balls under ambient air and seawater conditions were investigated by using a tribometer (Rtec). The results show that the coefficient of friction and wear rates of AlCrN/SiC are far lower than that of AlCrN/Si₃N₄ in both environments. The tribochemical product (SiO₂) occurs on the wear area and being acted as a lubricant. Dimples on the surface of SiC are in favor of keeping the tribological film in the wear track and relieving the abrasive wear. In comparison with Si₃N₄, the AlCrN coating sliding against SiC ceramic exhibits more excellent tribological properties.