Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy

doi:10.1016/j.surfcoat.2019.02.064

IMR OpenIR

	Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy
	Lu, Cheng 1,2; Feng, Xiaochun 1,2; Yang, Jingjing 1,2; Jia, Junhong 1,3; Yi, Gewen 1; Xie, Erqing 4; Sun, Yuan 5
通讯作者	Jia, Junhong(jhjia@licp.cas.cn)
	2019-04-25
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	364 页码:127-134
摘要	Self-lubricating polytetrafluoroethylene-containing PEO (PEO-PTFE) composite coatings were prepared by vacuum impregnation on plasma electrolytic oxidized aluminum alloy with different cathodic voltages. The topography, microstructure and composition of the composite coatings were investigated by FESEM equipped with EDX and XRD. The friction and wear properties were evaluated in the load range of 5-20 N using a reciprocating tribometer. The results show that the tribological properties of PEO-PTFE composite coatings are greatly influenced by the surface microstructure of PEO coating. The PEO coating fabricated at 150 V cathodic voltage shows coarser microstructure, while the corresponding PEO-PTFE composite coating registers superior self-lubricated property with lowest friction coefficient of 0.1 and 0.09 under the applied loads of 5 N and 10 N, respectively. In term of wear resistance ability, the 90 V composite coating possesses relatively low wear rate about 7.47 x 10(-6) mm(3).(N.m)(-1) with the coefficient of 0.13 under the test load of 10 N. The increased microcracks and diameter of micropores, like "grooves" and "ridges" on PEO coating, is beneficial for providing the scope for low-lubricating PTFE material, which can form smooth lubricating film during the friction process.
关键词	Aluminum alloy Microstructure PTFE Tribological behavior
资助者	National Natural Science Foundation of China ; fund of the State Key Laboratory of Solid Lubrication
DOI	10.1016/j.surfcoat.2019.02.064
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51575505] ; National Natural Science Foundation of China[51675508] ; fund of the State Key Laboratory of Solid Lubrication[LSL-1610]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000463302800014
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132795
专题	中国科学院金属研究所
通讯作者	Jia, Junhong
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 4.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Dept Superalloys, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Lu, Cheng,Feng, Xiaochun,Yang, Jingjing,et al. Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy[J]. SURFACE & COATINGS TECHNOLOGY,2019,364:127-134.
APA	Lu, Cheng.,Feng, Xiaochun.,Yang, Jingjing.,Jia, Junhong.,Yi, Gewen.,...&Sun, Yuan.(2019).Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy.SURFACE & COATINGS TECHNOLOGY,364,127-134.
MLA	Lu, Cheng,et al."Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy".SURFACE & COATINGS TECHNOLOGY 364(2019):127-134.