Influence of metallic Cr addition on the phase structure and mechanical properties of plasma-sprayed Ti-Si-C coatings

被引：14
作者：
Zhao, Hongjian [1 ,2 ]
Hu, Lanming [1 ,2 ]
Li, Chao [1 ,2 ]
Jiao, Qi [1 ,2 ]
He, Jining [1 ,2 ]
Qin, Yanfang [3 ]
Yin, Fuxing [1 ,2 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300132, Peoples R China
[2] Hebei Univ Technol, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300132, Peoples R China
[3] Suzhou Univ Sci & Technol, Coll Mech Engn, Suzhou 215000, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 12期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Ti-Si-C-Cr; Plasma spraying; Phase structure; Wear; TRIBOLOGICAL PROPERTIES; COMPOSITE COATINGS; SINTERED TI3SIC2; WEAR BEHAVIOR; MICROSTRUCTURE; PERFORMANCE;
D O I：
10.1016/j.ceramint.2021.03.075
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Ti-Si-C coatings with metallic Cr addition were plasma-sprayed using the Ti-Si-C-Cr powder aggregates with different molar ratios. The influence of metallic Cr addition on the phase structure and mechanical properties of the coating were studied. The outcomes illustrate that Ti-Si-C-Cr coatings contained binary TiC and Ti5Si3, ternary Ti3SiC2 phase, metallic Cr, and small amounts of residual Si and graphite phases. The fracture toughness of the 3Ti-Si-2C-1.0Cr coating had an -35% improvement compared to that of the 3Ti-Si-2C coating, while its micro-hardness only had -4% decrease. The wear loss of 3Ti-Si-2C-0.2Cr coating was only -39% of that observed for the 3Ti-Si-2C coating, indicating that the addition of metallic Cr improved the wear resistance. The coating worn surfaces primarily showed the characteristics of adhesive and abrasive wear.
引用
收藏
页码：17570 / 17579
页数：10
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