纳米Fe_3O_4/油酸添加剂对磨损表面的修饰作用  

The Repairing Role of Fe_3O_4/Oleic Acid Nanoparticles as Additives on Worn Surface

作　　者：柴多里[1] 韩小艳[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《润滑与密封》2010年第3期25-29,共5页Lubrication Engineering

基　　金：安徽高校省级自然科学研究重点计划项目(KJ2008A066)

摘　　要：采用水热法合成了在液体石蜡中具有良好亲和性和稳定性的Fe3O4/油酸(OA)纳米粒子。四球测试实验结果表明:Fe3O4/OA纳米粒子作为液体石蜡添加剂具有良好的摩擦学性能。当Fe3O4/OA的添加量为0.25%时,可使摩擦因数和磨斑直径分别减小68.2%和16.9%。试球磨斑表面的SEM分析表明:Fe3O4/OA纳米粒子在磨损表面微观缺陷区域有良好的表面修饰作用,避免了摩擦副的直接接触,减少了摩擦界面的黏着磨损,进而有效地提高了液体石蜡的摩擦学性能。Fe3O4/oleic acid（OA） nanocomplexes with excellent compatibility and stability in liquid paraffin（LP） were prepared through hydrothermal method.The four-ball test results show that Fe3O4/OA nanocomplexes as additives in LP exhibit good tribological property.As the addition of Fe3O4/OA is 0.25%,the friction coefficient and wear scar diameter are reduced 68.2% and 16.9% respectively.SEM morphologies of the worn steel surface indicate that Fe3O4/OA nanocomplexes show perfect repairing ability in the micro defect areas of worn surface,which may prevent direct contact between the rubbing faces and reduce adhesive wear of friction interface,thus improving the tribological performances of LP effectively.

关 键 词：表面修饰 纳米粒子 摩擦学性能 

分 类 号：O614.8[理学—无机化学]