稀土高强锌基合金耐磨性研究

Study on Resistant Frictional Property of RE High Strength Zine Based Alloy

该文根据锌基合金不同使用工况，利用ＳＲＶ滑动摩擦磨损实验仪和Ｍ－２００磨损实验机研究了ＺＡ＿（２７）ＣｕＭｇＲＥ合金同材质为摩擦副，以及与４５￣＃钢配副的摩擦磨损特性，研究发现，合金在３０￣＃机油润滑时同材质或与４５￣＃钢配副都具有良好的耐磨性能；而于摩擦工况下易发生粘着，不宜使用，但也证明在短时间润滑失效时仍具有良好的拉伤抗力。合金中加入０．１％～０．６％稀土，能使微观组织得到改善，耐摩擦磨损性能提高２０％～５０％以上。

Under different service conditions of Zinebasedalloy,the resistant frictionalproperties of ZA27CuMgRE,with the same material friction couples and 45# steel frictioncouples are studied’with the help of SRV and M-200 sliding friction wear testing machine. It has been found that the alloy with the same material friction couples and 45# steel friction couple has good resistant frictional properities,under 30# lubricant-oil.It is not suitable for dry friction but the zine alloy could still work safely for a short time,when lubrication failure happens,Adding 0.1%～0.6%RE to the alloy will improve the microstructure and raise the resistant friction wear properties by 20%～50%.