Wear behavior of HVOF-sprayed Al0.6TiCrFeCoNi high entropy alloy coatings at different temperatures

被引：116
作者：
Chen, Lijia [1 ,2 ]
Bobzin, Kirsten [2 ]
Zhou, Zheng [1 ]
Zhao, Lidong [2 ]
Oete, Mehmet [2 ]
Koenigstein, Tim [2 ]
Tan, Zhen [1 ]
He, Dingyong [1 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
[2] Rhein Westfal TH Aachen, Surface Engn Inst, D-52072 Aachen, Germany
来源：
SURFACE & COATINGS TECHNOLOGY | 2019年 / 358卷
基金：
国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;
关键词：
High entropy alloy; Coating; Microstructure; Friction behavior; Wear mechanism; MECHANICAL-PROPERTIES; MICROSTRUCTURE; PHASE; RESISTANCE; OXIDATION;
D O I：
10.1016/j.surfcoat.2018.11.052
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, an Al0.6TiCrFeCoNi high entropy alloy coating was produced by high-velocity-oxygen-fuel spraying. The microstructure and phase composition of the coating were investigated, moreover the hardness and the fracture toughness of the coating were determined. The wear behavior of the coating at different temperatures was evaluated using a pin-on-disc test. The results show that the coating was very dense and consisted of lamellae. Two BCC phases with similar lattice parameters were detected in the as-sprayed coating. The wear of the coating against an Al2O3 counter body was mainly caused by abrasion at all temperatures. The role of fatigue wear increased with increasing test temperature. In addition, tribo-reaction played an important role at the test temperature of T = 500 degrees C, which led to the lowest friction coefficient of the coating under the given test conditions.
引用
收藏
页码：215 / 222
页数：8
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