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采用滑动磨损试验方法测试了NiAl-Cr(Mo)-CrxSy自润滑复合材料与SiC陶瓷配副在110～960℃的摩擦磨损特性.结果表明:200～400℃,纳米CrxSy晶粒在复合材料摩擦表面形成较完整的润滑膜,产生自润滑性能;700～900℃,复合材料摩擦表面生成了1～3μm厚、完整的玻璃陶瓷润滑膜,产生了自润滑耐磨性能.2种润滑膜材料均可向SiC表面转移,消除了复合材料/SiC的摩擦状态.随着温度的升高,2种润滑膜材料的强度降低,SiC微凸体压入润滑膜,导致润滑膜的剥落加剧,复合材料的摩擦系数与磨损率升高.
The friction and wear properties of NiAl-Cr (Mo) -CrxSy self-lubricating composites and SiC ceramics at 110-960 ℃ were tested by means of sliding wear test. The results show that the friction and wear properties of nano- At the temperature of 700-900 ℃, a 1 ~ 3μm thick and complete glass-ceramic lubricating film was formed on the friction surface of the composite, resulting in a self-lubricating and wear-resistant property. Both lubricating film materials Can be transferred to the SiC surface, eliminating the frictional state of the composite / SiC.With the increase of temperature, the strength of the two lubricating film materials decreased, SiC micro-convex body pressed into the lubricating film, leading to exfoliation of the lubricating film, the composite material The friction coefficient and wear rate increased.