摘要
摩擦磨损试验结果表明,含钆元素的稀土化合物二烷基二硫代磷酸钆(GdDDP)与有机硼酸酯(OB)具有优异的协合润滑作用。采用扫描电子显微镜(SEM)和俄歇电子能谱仪(AES)研究了协合润滑机理。结果表明,这种协合润滑作用是由于在摩擦表面生成一层含有Gd、B、S和P等元素的表面保护膜;同时在摩擦亚表面形成了Gd-B摩擦共渗层,且钆元素对硼元素的渗透具有“摩擦催渗”作用,使渗层硼含量增加,从而提高材料表面硬度而使耐磨性能改善。
Experimental results indicate that gadolinium dialkyldithiophosphate (GdDDP) and an organoborate (OB) exhibit excellent lubrication synergism. Surface analysis results demonstrate that the synergism is attributed. on the one hand, to the formation of a surface film mainly containing the elements, gadolinium, boron, sulphur and phosphorous, etc, on the other hand to the production of a tribpdiffusion layer of gadolinium and boron Tribodiffusion of boron can be promoted by gadolinium, which inoteases microhardness of surfaces and therefore improves the wear-resistance of friction pairs.
出处
《机械工程材料》
CAS
CSCD
1996年第6期14-16,共3页
Materials For Mechanical Engineering
基金
国家自然科学基金
重庆市青年科技专家基金
