大气等离子喷涂制备的AlCoCrFeNi高熵合金涂层的摩擦磨损与腐蚀行为

Mu Yongkun, Zhang Liangbo, Xu Long, Prashanth Kondagokuldoss, Zhang Nizhen, Ma Xindi, Jia Yuefei, Xu Yulai, Jia Yandong, Wang Gang

Institute of Materials, Shanghai University, Shanghai 200444, China.

Department of Mechanical and Industrial Engineering, Tallinn University of Technology, 19086 Tallinn, Estonia.

Entropy (Basel). 2020 Jul 4;22(7):740. doi: 10.3390/e22070740.

High-entropy alloy coatings (HEAC) exhibit good frictional wear and corrosion resistances, which are of importance for structure materials. In this study, the microstructure, surface morphology, hardness, frictional wear and corrosion resistance of an AlCoCrFeNi high-entropy alloy coating synthesized by atmospheric plasma spraying (APS) were investigated. The frictional wear and corrosion resistance of the coating are simultaneously improved with an increase of the power of APS. The influence of the APS process on the microstructure and mechanical behavior is elucidated. The mechanisms of frictional wear and corrosion behavior of the AlCoCrFeNi HEAC are discussed in detail.

高熵合金涂层（HEAC）具有良好的摩擦磨损性能和耐腐蚀性，这对结构材料来说很重要。在本研究中，对通过大气等离子喷涂（APS）合成的AlCoCrFeNi高熵合金涂层的微观结构、表面形貌、硬度、摩擦磨损性能和耐腐蚀性进行了研究。随着APS功率的增加，涂层的摩擦磨损性能和耐腐蚀性同时得到提高。阐明了APS工艺对微观结构和力学行为的影响。详细讨论了AlCoCrFeNi高熵合金涂层的摩擦磨损和腐蚀行为机制。