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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.
Fe-Mo-graphite material (FM) and Fe-Mo-Ni-graphite material (FMN) were prepared by powder metallurgy technology. The microstructure and composition of the material were analyzed. The results show that the two composites of FM and FMN mainly contain ferrite, pearlite, Fe3Mo intermetallic compound, Mo2C, Fe2MoC and a small amount of graphite, the phases are evenly distributed, the amount of FMN is less than that of FM pearlite, The addition of Ni element inhibited the formation of pearlite to some extent. At room temperature, the graphite-rich friction layer exerts anti-friction effect. Under high temperature conditions, the graphite in the composite material and the Fe oxide formed on the dual surface Fe2O3 + Fe3O4 + FeO · Cr2O3 is important for anti-friction and anti-friction.