Microstructure and tribological behavior of a novel atmospheric plasma sprayed AlCoCrFeNi high entropy alloy matrix self-lubricating composite coatings - Details

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Abstract：

In　this　study,　AlCoCrFeNi　high-entropy　alloy　(HEA)　matrix　coatings　with　Ag　and　BaF2/CaF2　eutectic　were　successfully　fabricated　by　atmospheric　plasma　spray.　Tribological　properties　of　as-sprayed　coatings　at　varying　temperatures　were　investigated.　The　results　revealed　that　lubricating　phases　were　evenly　distributed　in　the　dense　HEA　matrix　coatings　with　typical　lamellar　structures.　The　HEA　coatings　exhibited　excellent　wear-resistance,　which　was　further　improved　with　the　increasing　temperatures.　The　addition　of　Ag　and　BaF2/CaF2　eutectic　alleviated　the　abrasion　behavior　and　eminently　decreased　the　wear　rate　by　10　times　at　room　temperature.　Meanwhile　the　lubricating　additives　changed　oxidation　products　and　inhibited　the　delamination　of　oxide　layers　at　800　°C.　©　2020　Elsevier　Ltd

Keyword：

Additives Aluminum alloys Barium compounds Chromium alloys Cobalt alloys Composite coatings Entropy Eutectics High-entropy alloys Iron alloys Lamellar structures Metallic matrix composites Plasma jets Plasma spraying Self lubricating composites Silver Sprayed coatings Tribology Wear of materials Wear resistance

Author Community：

[ 1 ] [Shi, Peiying]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 2 ] [Shi, Peiying]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 3 ] [Yu, Yuan]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 4 ] [Yu, Yuan]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 5 ] [Xiong, Nina]School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
[ 6 ] [Liu, Mingzi]Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi'an; 710129, China
[ 7 ] [Qiao, Zhuhui]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 8 ] [Qiao, Zhuhui]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 9 ] [Yi, Gewen]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 10 ] [Yi, Gewen]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 11 ] [Yao, Qianqian]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 12 ] [Yao, Qianqian]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 13 ] [Zhao, Gaopan]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 14 ] [Zhao, Gaopan]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 15 ] [Xie, Erqing]School of Physical Science and Technology, Lanzhou University, Lanzhou; 730000, China
[ 16 ] [Wang, Qihua]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
[ 17 ] [Wang, Qihua]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China

Reprint Author's Address：

[Yu, Yuan]State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China;;[Yu, Yuan]Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China;;

Email：

yuyuan@licp.cas.cnemailgwyi@licp.cas.cn) Yi, Gewen(gwyi@licp.cas.cn

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Source ：

Tribology International

ISSN： 0301-679X

Year： 2020

Volume： 151

4 . 8 7 2

JCR@2020

4 . 8 7 2

JCR@2020

ESI Discipline： ENGINEERING;

ESI HC Threshold：59

CAS Journal Grade：2

Cited Count：

WoS CC Cited Count： 22

SCOPUS Cited Count： 96

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 16

Affiliated Colleges：

电子与信息工程学部（原电子与信息工程学院）本学院/部未明确归属的数据

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