The friction and wear properties of amorphous carbon nitride(a-CN x)coatings in water lubrication were reviewed.The influences of mating materials and tribological variables such as normal load(W)and sliding speed(V)on the friction and wear properties of the a-CN x coatings were analyzed.It was indicated that the specific wear rate of the a-CN x coatings was related to the hydration reaction of mating materials with water.If the mating materials were easily hydrated,the specific wear rate of a-CN x coatings was low.The water-lubricated properties of the a-CN x coatings were better in comparison to the a-C coatings.The a-CN x/Si-based non-oxide ceramics tribo-pairs exhibited the lowest friction coefficient and wear rate.To describe their friction and wear properties at the normal loads of 3—15Nand the sliding speeds of 0.05—0.5m/s,the wear-mechanism maps for the a-CN x/SiC(Si3N4)tribo-pairs in water were developed.
目前广泛应用的含Cr的薄膜有Cr N薄膜,以及以Cr N薄膜为基础,通过添加Si和C元素形成的Cr Si N薄膜、Cr CN薄膜和Cr Si CN薄膜。综述上述4种薄膜的结构及其力学和摩擦学特性的研究进展,阐述在不同摩擦环境下掺杂元素含量对薄膜摩擦因数和磨损率的影响,指出Si和C元素的掺杂均能改善Cr N薄膜的摩擦学性能,并从结构角度分析其原因。
