纳米Sn粒子的制备及其作润滑油添加剂的摩擦学性能研究  

Preparation and Tribological Properties of Sn Nanoparticles as Oil Additives

作　　者：赵修臣[1] 宣瑜[1] 刘颖[1] 张弛[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《润滑与密封》2007年第1期108-110,共3页Lubrication Engineering

摘　　要：用化学还原法制备了表面经油酸修饰的纳米Sn粒子,并在透射电镜(TEM)下观测到所制备的纳米Sn粒子呈球形、平均粒径为20 nm。在MSR-10D四球摩擦磨损试验机上考察了纳米Sn粒子作为CF-4 15W/40润滑油添加剂的摩擦学性能,并在扫描电子显微镜(SEM)和能谱分析仪(EDS)上对钢球磨斑表面进行了形貌观测和表层成分分析。试验结果表明,纳米Sn粒子作为润滑油添加剂具有一定的减摩性能和较好的抗磨性能,当所添加的体积分数仅为0.1%时,添加纳米Sn粒子润滑油的摩擦力比基础油降低了16.64%,其磨斑直径比基础油减小了38.4%。分析认为,纳米Sn粒子通过隔离摩擦表面而改善了润滑油的减摩抗磨性能。OA modified Sn nanoparticles were synthesized by chemical method using NaBH4 as reduing agent. Investigated by TEM method, Sn nanoparticles are round particles, about 20 nm in dimensions. A MSR-10D four-ball equipment was used to investigate the tribological properties of Sn nanoparticles used as additives in base oil CF4 15W/40. The worn surfaces of the balls were analyzed by scanning electron microscopy （SEM） and EDS. As a result, Sn nanoparticles as an additive increase the antiwear ability and friction reducing properties of base oil CF4 15W/40. The friction is reduced byl6. 64%, and the wear scar diameters are reduced by 38.4% ,when 0. 1% volumes of Sn namopartlcles were added. The analysis by the SEM and EDS methods indicates that Sn particles could separate the worn surfaces, thus reduce friction and wear scar diameters.

关 键 词：减摩抗磨 纳米锡 润滑油添加剂 摩擦学性能 

分 类 号：TH117[机械工程—机械设计及理论]