INFLUENCE OF SUBSTRATE TEMPERATURE ON THE MICROSTRUCTURE AND PROPERTIES OF CoCrFeNiNbx HIGH ENTROPY ALLOY COATINGS

被引：0
|
作者：
Hao, Xuehui [1 ]
Chen, Jingru [1 ]
Zou, Xuefeng [1 ]
Guo, Yaqi [1 ]
Li, Zhihao [1 ]
Wang, Changzheng [1 ]
机构：
[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Peoples R China
来源：
SURFACE REVIEW AND LETTERS | 2024年
关键词：
High entropy alloy coatings; substrate temperature; microstructure; properties; DEPOSITION TEMPERATURE; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; THERMAL-STABILITY; NB; BEHAVIORS;
D O I：
10.1142/S0218625X24501257
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This work studies the effect of the substrate temperature on the microstructure and properties of CoCrFeNiNbx high entropy alloy (HEA) coatings fabricated by magnetron sputtering. The results indicate that all three CoCrFeNiNbx HEA coatings were composed of a simple FCC solid solution with a columnar structure. As the substrate temperature increased, Nb content in the FCC matrix increased while the grain size first decreased and then increased. Accordingly, CoCrFeNiNbx HEA coatings exhibited an increasing micro-hardness and a decreasing fracture toughness with the increasing substrate temperature. Moreover, CoCrFeNiNbx HEA coating deposited at 200(degrees) had better corrosion performance, which was due to its better surface quality and denser columnar structure compared to the other two coatings.
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页数：10
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