Nano oxides reinforced high-entropy alloy coatings synthesized by atmospheric plasma spraying

被引：67

作者：

Mu, K. ^{[1
]}

Jia, Y. D. ^{[1
]}

Xu, L. ^{[1
]}

Jia, Y. F. ^{[1
]}

Tan, X. H. ^{[1
]}

Yi, J. ^{[1
]}

Wang, G. ^{[1
]}

Liaw, P. K. ^{[2
]}

机构：

[1] Shanghai Univ, Inst Mat, Lab Microstruct, Shanghai, Peoples R China

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

MATERIALS RESEARCH LETTERS | 2019年 / 7卷 / 08期

基金：

上海市自然科学基金; 中国国家自然科学基金; 美国国家科学基金会;

关键词：

High-entropy alloy; coatings; nano oxides; tribological behavior; atmospheric plasma spraying; SLIDING WEAR BEHAVIOR; MECHANICAL-PROPERTIES; MICROSTRUCTURE; HVOF; CORROSION; FILMS; STRENGTH;

D O I：

10.1080/21663831.2019.1604443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high-entropy alloy coatings reinforced with nano oxides were synthesized by the atmospheric plasma spraying (APS). The crystal structure, microstructure, surface morphology, hardness and wear resistance properties of the CoCrFeNiAl and CoCrFeNiMo high-entropy alloy coatings are investigated. For CoCrFeNiAl high entropy coating (HEC) not only has high hardness (573 +/- 19 Hv(0.1)) but also has good wear resistance [The coefficients of friction (COF) is 0.49 +/- 0.04]. The transition of the wear mechanism obviously appears between the two HECs. The influences of the structure, composition and hardness on the tribological behavior of high-entropy alloy coatings were discussed in details. [GRAPHICS] IMPACT STATEMENT Nano oxides enhanced high-entropy coatings (HECs) are successfully fabricated by atmospheric plasma spraying, which exhibit the highest hardness and the best wear resistance in HECs and high-entropy alloys.

引用

页码：312 / 319

页数：8

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