Friction and wear performances of magnesium alloy against steel under lubrication of rapeseed oil with S-containing additive  

硫化菜籽油润滑添加剂对钢-镁摩擦副摩擦学性能的影响(英文)

作　　者：方建华[1,2] 潘复生[1] 陈波水[2] 吴江[2] 董凌[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]后勤工程学院军事油料应用与管理工程系,重庆401311

出　　处：《Transactions of Nonferrous Metals Society of China》2011年第12期2649-2653,共5页中国有色金属学报（英文版）

基　　金：Project (50975282) supported by the National Natural Science Foundation of China

摘　　要：A S-containing additive, sulfuration modified rapeseed oil （named as SRO）, was prepared by chemical modification of rapeseed oil with sulfur compounds. The results indicate that the friction and wear of the magnesium alloy-steel tribomates could be effectively reduced by formulating SRO into rapeseed oil lubricant. The friction coefficients and the wear volumes of magnesium alloy decrease with increasing contents of SRO. The surface lubricated with SRO-doped rapeseed oil was characterized by less wear as compared with that lubricated with neat rapeseed oil. The enhanced anti-wear and friction-reducing abilities of rapeseed oil by SRO in the lubrication of magnesium alloy against steel were ascribed to the formation of a composite boundary lubrication film due to the strong adsorption of SRO and rapeseed oil onto the lubricated surfaces and their tribochemical reactions with magnesium alloy.在菜籽油(RO)分子中引入硫,合成一种改性菜籽油润滑添加剂(SRO)。结果表明:以菜籽油为基础油的硫化菜籽油润滑添加剂对钢-镁摩擦副具有优良的抗磨减摩性能;镁合金的摩擦因数和磨损体积随着SRO添加量的增加而减小;与菜籽油润滑的镁块表面相比,用含SRO菜籽油润滑的镁块表面摩擦划痕较轻微。SRO对钢-镁摩擦副具有优良抗磨减摩作用的机理是由于添加剂和菜籽油分子在摩擦表面吸附并与镁合金发生了摩擦化学反应而生成了一层复杂的边界润滑膜。

关 键 词：ANTI-WEAR FRICTION-REDUCING magnesium alloy-steel tribomate sulfuration modified rapeseed oil 

分 类 号：TH117[机械工程—机械设计及理论]