High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray

IMR OpenIR

	High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray
其他题名	High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray
	Wang Jiqiang; Kong Lingyan; Li Tiefan; Xiong Tianying
	2016
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	26 期号:4 页码:1155-1162
摘要	A Ti(Al,Si)_3 diffusion coating was prepared on γ-TiAl alloy by cold sprayed Al-20Si alloy coating, followed by a heat-treatment. The isothermal and cyclic oxidation tests were conducted at 900 °C for 1000 h and 120 cycles to check the oxidation resistance of the coating. The microstructure and phase transformation of the coating before and after the oxidation were studied by SEM, XRD and EPMA. The results indicate that the diffusion coating shows good oxidation resistance. The mass gain of the diffusion coating is only a quarter of that of bare alloy. After oxidation, the diffusion coating is degraded into three layers: an inner TiAl_2 layer, a two-phase intermediate layer composed of a Ti(Al,Si)_3 matrix and Si-rich precipitates, and a porous layer because of the inter-diffusion between the coating and substrate.
其他摘要	A Ti(Al,Si)_3 diffusion coating was prepared on γ-TiAl alloy by cold sprayed Al-20Si alloy coating, followed by a heat-treatment. The isothermal and cyclic oxidation tests were conducted at 900 °C for 1000 h and 120 cycles to check the oxidation resistance of the coating. The microstructure and phase transformation of the coating before and after the oxidation were studied by SEM, XRD and EPMA. The results indicate that the diffusion coating shows good oxidation resistance. The mass gain of the diffusion coating is only a quarter of that of bare alloy. After oxidation, the diffusion coating is degraded into three layers: an inner TiAl_2 layer, a two-phase intermediate layer composed of a Ti(Al,Si)_3 matrix and Si-rich precipitates, and a porous layer because of the inter-diffusion between the coating and substrate.
关键词	Si)_3扩散涂层 γ-TiAl合金冷喷涂热处理高温氧化
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5702950
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/153887
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Wang Jiqiang,Kong Lingyan,Li Tiefan,et al. High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray[J]. Transactions of Nonferrous Metals Society of China,2016,26(4):1155-1162.
APA	Wang Jiqiang,Kong Lingyan,Li Tiefan,&Xiong Tianying.(2016).High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray.Transactions of Nonferrous Metals Society of China,26(4),1155-1162.
MLA	Wang Jiqiang,et al."High temperature oxidation behavior of Ti(Al,Si)_3 diffusion coating on γ-TiAl by cold spray".Transactions of Nonferrous Metals Society of China 26.4(2016):1155-1162.