摘要
详细地研究了在Ni- 2 0Cr合金粉中添加MoS2 ,通过热压法制备得到的高温自润滑材料的摩擦学特性。研究表明 ,当MoS2 的添加量在 2 0 %左右时 ,所得到的材料具有最佳的摩擦磨损性能。在热压过程中MoS2 发生了热分解 ,并与合金中的铬反应生成了CrXSY(x/y =2 /3～ 1 )型硫化物共晶体 ,这种化合物在高温下可以变软或熔化 ,在摩擦面之间形成润滑膜 ,并具有转移性 ,从而具有减摩性能。
The tribological properties of the self-lubricating material, which was made from Ni-20Cr alloy powder and MoS 2 powder by HP process, were studied here in detail. The results show that the material with 20% MoS 2 addiction has the best friction-wear properties. During HP process, MoS 2 thermo-decomposes to react with chromium in the alloy and produce Cr xS y(x/y=2/3～1) compound, which may soften or melt at high temperature and form transferring lubricating film between frictional surfaces to lower friction coefficient.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2000年第1期31-34,共4页
Powder Metallurgy Technology
基金
国家自然科学基金!资助项目
项目编号 5 95 71 0 6 2
