含MoS2镍基复合材料摩擦磨损性能的研究

对用粉末冶金法制备的含MoS2镍基合金的摩擦磨损性能进行了研究，并探讨了其减摩机理．研究结果表明，MoS2质量分数为6％的镍基合金．可在摩擦表面形成起润滑作用的含硫化合物的复合膜，此时材料表现出较好的摩擦磨损综合性能．     

Tribological behavior of Ni-Cr-based composite at high temperatures

The wear behavior of Ni-Cr-based alloys was investigated at ambient and elevated temperatures. The wear samples were prepared by metallurgical hot pressing. Wear tests were carded out on a general purpose wear testing machine having a heating unit and pin-disc sample configuration. The counterface material was prepared from Al2O3 ceramics. The tests were carded out at room temperature （RT）, 200 ℃ and 600℃. The effects of temperatures on the tribological properties were determined by using optical microscopy, and X-ray diffractometry. The results show that at room temperature the worn surfaces of the alloys are characterized by mild scuffing and micro cracks, the action of nano-crystal structural wear debris on the worn surfaces is responsible for the reduction of friction. At 200℃, the friction coefficient is the highest. The worn surfaces of the alloys are adhesive and oxidative. At 600℃, the friction coefficient is reduced due to the effect of the oxides, tungstates and sulfides residue on the worn surface.     

高温固体润滑材料的研究现状

为了满足国防高科技的发展 ,迫切需要研制从常温到高温下都具有良好减摩耐磨性能的摩擦学材料。对近来高温固体润滑摩擦材料的发展进行了综述 ,分别就金属基润滑材料 ,陶瓷基润滑材料及稀土化合物的高温润滑作用三方面的研究进行了比较全面的介绍 ,并在此基础上提出了高温摩擦学研究的几个值得关注的问题