Self-assembly of ceria/graphene oxide composite films with ultra-long antiwear lifetime under a high applied load

被引：36

作者：

Bai, Guoying ^{[1
,2
]}

Wang, Jinqing ^{[1
]}

Yang, Zhigang ^{[1
]}

Wang, Honggang ^{[1
]}

Wang, Zhaofeng ^{[1
]}

Yang, Shengrong ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100080, Peoples R China

来源：

CARBON | 2015年 / 84卷

基金：

中国国家自然科学基金;

关键词：

X-RAY PHOTOELECTRON; GRAPHENE OXIDE; TRIBOLOGICAL BEHAVIOR; ALKYL MONOLAYERS; SILICON; REDUCTION; LANTHANUM; FRICTION; SHEETS; WATER;

D O I：

10.1016/j.carbon.2014.11.063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we report a simple self-assembly way to prepare ceria/graphene oxide (CeO2 GO) composite films on silicon (Si) substrates, which exhibit significant enhancement on tribological performances compared with Si substrates and GO films. Specifically, the friction coefficient is reduced drastically to the one-third of that of Si substrates. What's more, the antiwear lifetime is markedly prolonged to similar to 8 h under a high applied load of 2 N, which is over seven times longer than that of GO films. It is expected that the CeO2/GO composite films may find wide applications in nano/microelectromechanical systems as high-performance solid lubricating films, due to their facile and low cost preparation, nano-scale thickness, lower friction coefficient and desired antiwear lifetime. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：197 / 206

页数：10

共 53 条

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