Anti-wear and friction performance of ZrO_2 nanoparticles as lubricant additive  

作　　者：Shiyu Ma Shaohua Zheng Duxia Cao Hongna Guo 

机构地区：[1]School of Materials and Engineering University of Jinan, Jinan, Shandong 250022, China

出　　处：《Particuology》2010年第5期468-472,共5页颗粒学报（英文版）

基　　金：supported by a grant from the National Natural Science Foundation of China(50572034)

摘　　要：The surface of ZrO2 nanoparticles was modified with silane coupling agent KH-560 by dispersing the nanoparticles in 20# machine oil. The tribological performance of the 20# machine oil with ZrO2 nanoparticles was evaluated by a four-ball tester and a thrust-ring machine. The loss of the thrust-ring weight was measured by an electronic balance with a precision of 0.0001 g. The worn surface was examined under a metallographic microscope with 400-times magnification. The results showed that the average friction coefficient decreased by 27.34%, and that the weight loss of the thrust-ring indicated no wear or negative wear, the wear loss after six loads tests being -0.0163 g. The anti-wear （AW） and reducing friction （RF） abilities of the oil with ZrO2 nanoparticles addition were considerably improved, maximizing at an additive concentration of 0.5 wt%.The surface of ZrO2 nanoparticles was modified with silane coupling agent KH-560 by dispersing the nanoparticles in 20# machine oil. The tribological performance of the 20# machine oil with ZrO2 nanoparticles was evaluated by a four-ball tester and a thrust-ring machine. The loss of the thrust-ring weight was measured by an electronic balance with a precision of 0.0001 g. The worn surface was examined under a metallographic microscope with 400-times magnification. The results showed that the average friction coefficient decreased by 27.34%, and that the weight loss of the thrust-ring indicated no wear or negative wear, the wear loss after six loads tests being -0.0163 g. The anti-wear （AW） and reducing friction （RF） abilities of the oil with ZrO2 nanoparticles addition were considerably improved, maximizing at an additive concentration of 0.5 wt%.

关 键 词：AdditiveZrO2 nanoparticlesBoundary lubricationFriction and wear 

分 类 号：TH117.1[机械工程—机械设计及理论] TE624.82[石油与天然气工程—油气加工工程]