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

doi:10.1016/j.surfcoat.2019.02.064

CORC > 金属研究所 > 中国科学院金属研究所

	Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy
	Lu, Cheng 1,4; Feng, Xiaochun 1,4; Yang, Jingjing 1,4; Jia, Junhong 4,5; Yi, Gewen 4; Xie, Erqing 2; Sun, Yuan 3
刊名	SURFACE & COATINGS TECHNOLOGY
	2019-04-25
卷号	364 页码:127-134
关键词	Aluminum alloy Microstructure PTFE Tribological behavior
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2019.02.064
通讯作者	Jia, Junhong(jhjia@licp.cas.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000463302800014
资助机构	National Natural Science Foundation of China ; fund of the State Key Laboratory of Solid Lubrication
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132797]
专题	金属研究所_中国科学院金属研究所
通讯作者	Jia, Junhong
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Dept Superalloys, Shenyang 110016, Liaoning, Peoples R China 4.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 5.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, 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.