摘要
采用粉末冶金技术制备了Fe-Mo-石墨材料(FM)和Fe-Mo-Ni-石墨材料(FMN),分析了其显微组织及组成,并研究了其在室温、320℃和450℃下的摩擦磨损性能.结果表明:FM和FMN两种复合材料主要含有铁素体、珠光体、Fe3Mo金属间化合物、Mo2C、Fe2MoC以及少量石墨,各相分布均匀.FMN较FM珠光体数量要少,Ni元素的加入在一定程度上抑制了珠光体的生成;室温条件下,富含石墨的摩擦层发挥了减摩作用,而在高温条件下,复合材料中的石墨与对偶表面生成的Fe氧化物Fe2O3+Fe3O4+FeO·Cr2O3对其减摩降磨至关重要.
The Fe - Mo - Graphite （FM） and Fe - Mo - Ni - Graphite （FMN） composites were fabricated by P/M technology. The microstructure, component and the tribological behavior of these composites at room temperature, 320 ℃ and 450 ℃ were investigated. The results indicate that both kinds of composites were mainly composed of ferrites, pearlite, Fe3 Mo, Mo2 C, Fe2 MoC carbides, and small amount of compacted graphite. The content of pearlites in FMN was less than that in FM. It is suggested that the addition of Ni element affect the formation and growth of the pearlite. At room temperature, the surface layer rich in graphite in sliding contact was contributed to the low friction of these composites. At elevated temperature, graphite and Fe oxides on the surface of counterparts, such as Fe203 , Fe304 and FeO · Cr2O3 played the key role on decreasing friction and reducing wear.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2013年第5期475-480,共6页
Tribology
基金
国家自然科学基金项目(51105351)
兰州市科技发展计划项目(2010-2-5)资助~~
