Long-term oxidation behavior of silicon-aluminizing coating with an in-situ formed Ti5Si3 diffusion barrier on gamma-TiAl alloy

doi:10.1016/j.apsusc.2022.152444

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	Long-term oxidation behavior of silicon-aluminizing coating with an in-situ formed Ti5Si3 diffusion barrier on gamma-TiAl alloy
	Huang, Jiang 1,2; Zhao, Feng 1,2; Cui, Xinyu 1; Wang, Jiqiang 1; Xiong, Tianying 1
刊名	APPLIED SURFACE SCIENCE
	2022-04-30
卷号	582 页码:13
关键词	High-temperature oxidation Silicon-aluminizing diffusion coating In-situ diffusion barrier gamma-TiAl Cold spray Ti (5) Si (3)
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2022.152444
通讯作者	Wang, Jiqiang(jqwang11s@imr.ac.cn)
英文摘要	In the present study, a novel silicon-aluminizing diffusion coating composed of uniform Ti (Al, Si)(3) phase was manufactured on gamma-TiAl alloy via post heat-treatment of cold-sprayed Al-40Si (wt.%) coating. The high temperature oxidation resistance of the diffusion coating was evaluated under 950 C for 1000 h. During the oxidation process, Ti5Si3 precipitations with network-like structure were shaped in the inner of the diffusion coating, which acted as getters for Ti and promoted the formation of Al2O3 scale. Meanwhile, an in-situ Ti5Si3 diffusion barrier was also formed, which inhibited the interdiffusion between the coating and substrate, especially the fast depletion of Al in the diffusion coating and thus improved the long-term oxidation resistance of gamma-TiAl. The microstructure evolution, formation of the in-situ diffusion barrier and high temperature oxidation resistance mechanisms of the diffusion coating were discussed in detail.
资助项目	National Natural Science Foundation of China[51801217]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000762843600001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173153]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Jiqiang
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Huang, Jiang,Zhao, Feng,Cui, Xinyu,et al. Long-term oxidation behavior of silicon-aluminizing coating with an in-situ formed Ti5Si3 diffusion barrier on gamma-TiAl alloy[J]. APPLIED SURFACE SCIENCE,2022,582:13.
APA	Huang, Jiang,Zhao, Feng,Cui, Xinyu,Wang, Jiqiang,&Xiong, Tianying.(2022).Long-term oxidation behavior of silicon-aluminizing coating with an in-situ formed Ti5Si3 diffusion barrier on gamma-TiAl alloy.APPLIED SURFACE SCIENCE,582,13.
MLA	Huang, Jiang,et al."Long-term oxidation behavior of silicon-aluminizing coating with an in-situ formed Ti5Si3 diffusion barrier on gamma-TiAl alloy".APPLIED SURFACE SCIENCE 582(2022):13.