Oxidation of double-glow plasma chromising coating on TC4 titanium alloys

被引:80
作者
Wei, Dong-Bo [1 ]
Zhang, Ping-Ze [1 ]
Yao, Zheng-Jun [1 ]
Liang, Wen-Ping [1 ]
Miao, Qiang [1 ]
Xu, Zhong [1 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Titanium alloy; Metal coating; High-temperature oxidation; Diffusion; HIGH-TEMPERATURE CORROSION; MECHANICAL-PROPERTIES; BEHAVIOR; CR; RESISTANCE; ALUMINIDES; NB; MICROSTRUCTURE; TI6AL4V; SYSTEMS;
D O I
10.1016/j.corsci.2012.08.063
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Double-glow plasma surface chromising was performed on TC4 (Ti-6Al-4V) alloys, and the isothermal oxidation behaviour of TC4 was investigated at 650, 750, and 850 degrees C. The surface treatment caused the formation of a Ti-Cr mutual diffusion layer beneath the alloy surface. The chromising coating consisted of Cr, Cr1.97Ti1.07, and CrTi4. During oxidation, Cr, Ti, and Al diffused outward to form multi-layer oxide films, which prevented the diffusion of oxygen. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:43 / 50
页数:8
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