Fe3Si金属间化合物在干摩擦及水润滑条件下的摩擦学性能研究  

Tribological Properties of Fe_3Si under Dry Friction and Water Lubrication

作　　者：贾建刚[1] 吕晋军[2] 马勤[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [2]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000

出　　处：《摩擦学学报》2008年第4期299-303,共5页Tribology

基　　金：国家自然科学基金资助项目(50675216);甘肃省自然科学基金资助项目(3ZS062-B25-025)

摘　　要：利用高能球磨和热压烧结工艺制备了Fe3Si有序金属间化合物块体材料,考察了其与Si3N4配副时在干摩擦和水润滑条件下的摩擦学性能.结果表明,在干摩擦条件下Fe3Si/Si3N4摩擦副表现出很高的摩擦系数,Fe3Si与Si3N4的磨损率分别为1.408×10-14m3/(N.m)和4.735×10-16m3/(N.m),两者相差近2个数量级;在水润滑条件下,Fe3Si的磨损率下降而Si3N4的磨损率上升,两者磨损率分别为7.406×10-15m3/(N.m)和2.522×10-15m3/(N.m).另外,在水润滑条件下的摩擦化学产物对Fe3Si的摩擦学性能影响显著.Fe3Si ordered intermetallic alloy was prepared through high energy ball milling and hot-press sintering. Its friction and wear behavior sliding against Si3 N4 under dry friction and water lubrication was evaluated on a ballon-disk tribo-meter. Results indicate that the friction coefficient of Fe3Si/Si3N4 tribo-couples was very high under dry friction. The wear rate of Fe3Si and Si3N4 were 1. 408 × 10^14 m^3/（N . m） and 4. 735 × 10^-16 m^3/（ N · m） respectively. The wear rate of Si3N4 was almost two orders lower than that of Fe3Si under dry friction. The wear rate of Fe3 Si decreased while the wear rate of Si3 N4 increased under water lubrication. Their wear rates were 7. 406 ×10^-15 m^3/（N · m） and 2. 522 × 10^-15 m^3/（N · m） respectively. The tribochemical product played an important role for the tribological property of Fe3 Si under water lubrication.

关 键 词：FE3SI 摩擦学性能 摩擦化学产物 SI3N4 

分 类 号：TH117.3[机械工程—机械设计及理论]