Enhancing the tribological performance of PEEK exposed to water-lubrication by filling goethite (α-FeOOH) nanoparticles

被引：25
作者：
Gao, Chuanping [1 ]
Zhang, Ga [1 ]
Wang, Tingmei [1 ]
Wang, Qihua [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 73000, Peoples R China
来源：
RSC ADVANCES | 2016年 / 6卷 / 56期
基金：
中国国家自然科学基金;
关键词：
FILLED PPS COMPOSITES; MECHANICAL-PROPERTIES; BOUNDARY LUBRICATION; CARBON-FIBERS; WEAR; FRICTION; BEHAVIOR; ADSORPTION; MAGNETITE; TRIBOFILMS;
D O I：
10.1039/c6ra06904e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The formation of a tribo-film on the counterface plays an important role on the tribological performances of polymer subjected to mixed and boundary lubrication conditions. However, when freshwater is used as a lubricant, the formation of a tribo-film usually is hindered. In order to overcome this disadvantage, PEEK/alpha-FeOOH nanocomposites were developed and their tribological performances were studied under water lubrication conditions in the present work. It was demonstrated that the inclusion of alpha-FeOOH nanoparticles (NPs) into the PEEK matrix improves significantly the tribological performance of the matrix. The nanostructures and properties of the tribo-films formed on the steel counterface were comprehensively studied. It was identified that the addition of alpha-FeOOH NPs promotes the formation of a lubricating tribo-film which covers the entire counterface. Based on the investigations on tribo-films, we deem that the alpha-FeOOH NPs act as precursors for the dehydration reaction promoting the formation of a tribo-film which consists of alpha-Fe2O3 and transferred PEEK. It is assumed that the enhanced tribological performance is related to the possibly high load-bearing capability and "easy-to-shear" characteristic of the tribo-film.
引用
收藏
页码：51247 / 51256
页数：10
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