Microstructure and wear properties of TiN-Al2O3-Cr2B multiphase ceramics in-situ reinforced CoCrFeMnNi high-entropy alloy coating

被引：32
作者：
Zhang, Baosen [1 ,2 ]
Yu, Yaqiu [1 ,2 ]
Zhu, Shuaishuai [1 ,2 ]
Zhang, Zhijia [1 ,2 ]
Tao, Xuewei [1 ,2 ]
Wang, Zhangzhong [1 ,2 ]
Lu, Bin [3 ]
机构：
[1] Nanjing Inst Technol, Sch Mat Sci & Engn, Nanjing 211167, Peoples R China
[2] Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Peoples R China
[3] Haian Hengyi Sliding Bearings Co Ltd, Nantong 226600, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 276卷
基金：
中国国家自然科学基金;
关键词：
High-entropy alloy coating; Ceramics; Plasma cladding; Wear properties; MECHANICAL-PROPERTIES; COMPOSITE COATINGS; TRIBOLOGICAL BEHAVIOR; RESISTANCE; TEMPERATURE; EVOLUTION;
D O I：
10.1016/j.matchemphys.2021.125352
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to improve the hardness and wear resistance of high entropy alloy (HEA) coating, the TiN-Al2O3-Cr2B multiphase ceramics reinforced CoCrFeMnNi high-entropy alloy coating was prepared by the plasma cladding. The composite coating was composed of face-centered-cubic (FCC) structure alloy phase and the in-situ synthesized TiN-Al2O3-Cr2B multiphase ceramics, and exhibited the good bonding in interface. Compared with the pure CoCrFeMnNi coating, the hardness of the composite coating (320 HV0.3) increased by 71.90%, owing to the dispersion distribution of TiN-Al2O3-Cr2B multiphase ceramics and the solid solution of Al/Ti in the HEA matrix. The wear rate of reinforced HEA composite coating were 0.51 x 10(-5), 0.98 x 10(-5), 0.30 x 10(-5) and 0.25 x 10(-5) mm(3) N-1 m(-1), which were 20.48% (25 degrees C), 34.75% (200 degrees C), 16.13% (400 degrees C) and 10.12% (600 degrees C) of pure HEA coating, respectively. The wear mechanisms of the cladded coatings were adhesive wear, abrasive wear, oxidation wear. The strengthening of TiN-Al2O3-Cr2B multiphase ceramics acted as a disincentive to the adhesive wear of the composite coating during high temperature sliding progress. Besides, the multiphase ceramics played the load-bearing and load transfer role to improve the wear resistance of the composite coating.
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页数：11
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