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

被引：27
作者：
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 ]
机构：
[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
来源：
SURFACE & COATINGS TECHNOLOGY | 2019年 / 364卷
基金：
中国国家自然科学基金;
关键词：
Aluminum alloy; Microstructure; PTFE; Tribological behavior; PLASMA ELECTROLYTIC OXIDATION; CERAMIC COATINGS; WEAR-RESISTANT; BEHAVIOR; PERFORMANCE; COMPOSITES;
D O I：
10.1016/j.surfcoat.2019.02.064
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
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.
引用
收藏
页码：127 / 134
页数：8
相关论文
共 26 条
[1]   Characterization and properties of PEO coatings on 7075 Al alloy grown in alkaline silicate electrolyte containing KMnO4 additive [J].
Aliramezani, Reihane ;
Raeissi, Keyvan ;
Santamaria, Monica ;
Hakimizad, Amin .
SURFACE & COATINGS TECHNOLOGY, 2017, 329 :250-261
[2]   Fabrication of corrosion resistant hydrophobic ceramic nanocomposite coatings on PEO treated AA7075 [J].
Arunnellaiappan, T. ;
Arun, S. ;
Hariprasad, S. ;
Gowtham, S. ;
Ravisankar, B. ;
Krishna, Rama L. ;
Rameshbabu, N. .
CERAMICS INTERNATIONAL, 2018, 44 (01) :874-884
[3]   Enhancement of tribological performance of epoxy bulk composites and composite coatings using micro/nano fillers: a review [J].
Bobby, Satheesan ;
Samad, Mohammed Abdul .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2017, 28 (06) :633-644
[4]   Van der Waals epitaxial growth of MoS2 on SiO2/Si by chemical vapor deposition [J].
Cheng, Yingchun ;
Yao, Kexin ;
Yang, Yang ;
Li, Liang ;
Yao, Yingbang ;
Wang, Qingxiao ;
Zhang, Xixiang ;
Han, Yu ;
Schwingenschloegl, Udo .
RSC ADVANCES, 2013, 3 (38) :17287-17293
[5]   The effect of Ti ions implantation on the structure of anodic alumina films [J].
Cherenda, NN ;
Uglov, VV ;
Litvinovich, GV ;
Danilyuk, AL .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 211 (02) :219-226
[6]   Preparation and performance of a novel multifunctional plasma electrolytic oxidation composite coating formed on magnesium alloy [J].
Guo, Jie ;
Wang, Liping ;
Wang, S. C. ;
Liang, J. ;
Xue, Qunji ;
Yan, Fengyuan .
JOURNAL OF MATERIALS SCIENCE, 2009, 44 (08) :1998-2006
[7]  
[胡汉军 Hu Hanjun], 2017, [摩擦学学报, Tribology], V37, P318
[8]   Production of conversion oxide-ceramic coatings on zirconium and titanium alloys [J].
Klapkiv, M. D. ;
Povstyana, N. Yu. ;
Nykyforchyn, H. M. .
MATERIALS SCIENCE, 2006, 42 (02) :277-286
[9]   Surface engineering with light alloy - Hard coatings, thin films, and plasma nitriding [J].
Korhonen, AS ;
Harju, E .
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2000, 9 (03) :302-305
[10]   Growth mechanism and adhesion of PEO coatings on 2024Al alloy [J].
Li, Q. B. ;
Liu, C. C. ;
Yang, W. B. ;
Liang, J. .
SURFACE ENGINEERING, 2017, 33 (10) :760-766
123