纳米SiO_2润滑油添加剂的摩擦学性能研究  

Friction Property Study of Nano-SiO_2 Lubricant Additive

作　　者：霍玉秋[1] 闫玉涛[2] 翟玉春[1] 

机构地区：[1]东北大学材料与冶金学院 [2]东北大学机械工程与自动化学院,沈阳110004

出　　处：《材料导报》2004年第4期101-103,共3页Materials Reports

基　　金：辽宁省自然科学基金(9910300501)

摘　　要：以醇盐水解沉淀法制备了40nm左右的二氧化硅粒子;用四球摩擦试验机测定了纳米SiO_2作为润滑油添加剂的摩擦性能,并利用SEM照片观察磨斑表面形貌,探讨了纳米SiO_2的抗磨机理。研究结果表明:400SN基础油的承载能力在加入纳米SiO_2后得到很大提高,并且纳米SiO_2的加入量有一最佳值。当加入量为1.5%时,P_B值增大了近1倍,达到最佳。Nano-SiO_2 particles have been prepared by the alkoxide hydrolysis-precipitation method; Using four-ball tester the authors studied the friction properties of nano-SiO_2 lubricant additive,observed the friction surface by SEM and discussed the antifriction mechanism of nano-SiO_2. The results show that the carrying capacity of 400SN base oil increases with the addition of nano-SiO_2. When nano-Si0_2 is added to 1. 5%(mass fraction),P_B is the optimum. When addition of nano-SiO_2 continues,P_B begins to decrease. The optimum P_B is about one time more than the P_B of base oil.

关 键 词：纳米二氧化硅 润滑油添加剂 摩擦性能 材料结构 摩擦机理分析 

分 类 号：TB383[一般工业技术—材料科学与工程]