摘要
应用离子氮碳共渗与离子渗硫技术,在SiCrMoCu合金铸铁表面制备出由离子氮碳共渗次表层及以FeS相为主的渗硫表层组成的FeS固体润滑复合层。试验表明,锂基脂润滑条件下,FeS固体润滑复合层表面的摩擦因数比未渗表面大约降低了40%,比渗硫表面降低了30%左右;体积磨损量分别比未渗表面及渗硫表面减少了50%和20%左右。FeS固体润滑复合层具有优良的减摩、耐磨及抗划伤性能是因为,复合层自身的结构性能使其符合理想的摩擦表面要求,并且延长了锂基脂及其在摩擦表面上可能形成的化学反应膜的润滑作用。
FeS solid lubrication composite layer was prepared on the surface of CrMoCu alloy cast iron by using ion nitrocarbur/zing and sulphurizing technology. The composite layer is composed of ion nitrocarburized hypo-surface layer and ion sulphurized surface layer composed mainly of FeS phase. Under the epinoc grease lubrication condition, the coefficient of friction of FeS solid lubrication composite layer is respectively about 40% and 30% lower than that of the plain surface and that of the sulphurized layer. The wear volume of FeS solid lubrication composite layer is respectively 50% and 20% lower than that of the plain surface and that of the sulphurized layer. FeS solid lubrication composite layer has excellent friction reduction, wear resistance and anti-scuffing properties, which attribute to the structure of the composite layer according with the perfect friction surface, and prolong the lubrication of epinoc grease and its chemical reaction film on the friction surface.
出处
《中国表面工程》
EI
CAS
CSCD
2008年第4期45-48,共4页
China Surface Engineering
基金
国家自然科学基金资助项目(50775221)
关键词
FeS固体润滑复合层
离子氮碳共渗次表层
离子渗硫表层
减摩
FeS solid lubrication composite layer
ion nitrocarburized hypo-surface layer
ion sulphurized surface layer
epinoc grease
friction reduction
wear resistance
