期刊
MATERIALS RESEARCH LETTERS
卷 7, 期 8, 页码 312-319出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/21663831.2019.1604443
关键词
High-entropy alloy; coatings; nano oxides; tribological behavior; atmospheric plasma spraying
资金
- National Key Research and Development Program of China [2016YFB0700203]
- National Natural Science Foundation of China [51601109, 51471101]
- Natural Science Foundation of Shanghai [17ZR1440800]
- Department of Energy (DOE), Office of Fossil Energy, National Energy Technology Laboratory [DE-FE-0011194]
- National Science Foundation [DMR-1611180, 1809640]
- State Administration of Foreign Experts Affairs [D16002]
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.
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