不同粒径的锑纳米颗粒在润滑油中的分散性与摩擦性能  

Dispersion and their tribological properties of antimony nanoparticles with different particle sizes as additive in lubricating oil

作　　者：徐建林[1,2] 淡小敏 王程程[1,2] 文琛[1,2] 赵金强[1,2] 刘晓琦[1,2] 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《材料热处理学报》2016年第8期209-214,240,共7页Transactions of Materials and Heat Treatment

基　　金：浙江省自然科学基金(LY12E01002);省部共建有色金属先进加工与再利用国家重点实验室开放基金(SKL12012)

摘　　要：以硅烷偶联剂KH-570为表面改性剂,采用机械球磨法制备了不同粒径的锑纳米颗粒。将不同粒径的锑纳米颗粒添加到900SN基础油中作为试验润滑油。通过测试润滑油的吸光度考察了锑纳米颗粒在润滑油中的分散稳定性;利用往复式摩擦实验研究锑纳米颗粒作为润滑油添加剂的摩擦学性能。研究结果表明:表面改性的锑纳米颗粒由于具有空间位阻效应,表现出良好的分散性。粒径越小,分散性越好;由于锑纳米颗粒可填补到磨损表面的微坑处,其在900SN润滑油中具有优良的减摩润滑效果。粒径越小,其对磨损表面的修复效果越好。当锑纳米颗粒粒径为40 nm时,其在试验润滑油中具有很好的分散性,并表现出优异的减摩抗磨性能。Using silane coupling agent KH-570 as the surface modifier,antimony nanoparticles with various particle sizes were prepared by mechanical ball milling method.The antimony nanoparticles with different particle sizes were added into 900 SN base oil to form the experimental lubricating oils.The dispersion of antimony nanoparticles in the lubricating oil was investigated by measuring the absorbance of the oil,and the tribological properties of the antimony nanoparticles as the lubricating oil additive were studied by a reciprocating friction tester.The results show that the antimony nanoparticles have good dispersion in the lubricating oil due to steric effect of the surface modified nanoparticles.The nanoparticles with smaller size exhibit better dispersion.Meanwhile,the excellent lubricating effect of the antimony nanoparticles in the lubricating oil is observed because these nanoparticles fill in some micro-pits on the worn surface.The smaller the particle size is,the better the repairing effect is for the worn surface.When the particle size of the antimony nanoparticles is about 40 nm,the antimony nanoparticles are dispersed well in the experimental lubricating oil and the oil shows good antifriction and antiwear performance.

关 键 词：锑纳米颗粒 粒径 润滑油 分散性 摩擦性能 

分 类 号：TH117[机械工程—机械设计及理论]