| Influence of surface microstructure on tribological properties of PEO-PTFE coating formed on aluminum alloy | |
| Lu, Cheng1,2; Feng, Xiaochun1,2; Yang, Jingjing1,2; Jia, Junhong1,3; Yi, Gewen1; Xie, Erqing4; Sun, Yuan5 | |
| Corresponding Author | Jia, Junhong(jhjia@licp.cas.cn) |
| 2019-04-25 | |
| Source Publication | SURFACE & COATINGS TECHNOLOGY
 |
| ISSN | 0257-8972 |
| Volume | 364Pages:127-134 |
| Abstract | 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. |
| Keyword | Aluminum alloy Microstructure PTFE Tribological behavior |
| Funding Organization | National Natural Science Foundation of China ; fund of the State Key Laboratory of Solid Lubrication |
| DOI | 10.1016/j.surfcoat.2019.02.064 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Coatings & Films ; Physics, Applied |
| WOS ID | WOS:000463302800014 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132798 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jia, Junhong |
| Affiliation | 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 |
| Recommended Citation 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. |
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