High-temperature corrosion resistance of Al-Re and Re coatings

IMR OpenIR

	High-temperature corrosion resistance of Al-Re and Re coatings
	Z. M. Yu; T. Narita
	2001
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	56 期号:5-6 页码:467-493
摘要	The oxidation behavior in air at 1473 K, and sulfidation behavior in a H2S-H-2 gas mixture with a sulfur partial pressure of 10(-2) Pa at 973 K of Al-Re coated CMSX-4 were studied. Investigation on the sulfidation behavior of the Re-coated CMSX-4 was carried out in a H2S-H-2 gas mixture with a sulfur partial pressure of 10(-2) Pa at 973 K The experimental results show that a Re-rich alloy layer was formed between an alpha -Al2O3 layer and the inner concentration bone of Ta and Ti for the CMSX-4 single crystal alloy with an AI-Re coating after oxidation. The Re-rich alloy layer containing Cr, W, Ni, Co, and Alo effectively inhibited the outward diffusion of alloying elements and the inward diffusion of AL The Al/Re-coated CMSX-4 single crystal alloy had excellent sulfidation resistance; the Re-rich alloy layer, containing W, Ti, Ta, and Mo, which formed during the sulfidation process and located between the alumina scale and the CMSX-4 base alloy, plays a role in inhibiting the outward diffusion of alloying elements. The sulfidation resistance of CMSX-4 single-crystal alloy is greatly improved by a Re coating on the CMSX-4 alloy surface; this is attributed to a Re-Cr-W alloy layer that retarded the outward diffusion of cations and the oxide layer containing Ta, Ti, and Al, which inhibited the inward penetration of sulfur.
部门归属	chinese acad sci, state key lab corros & protect, inst met res, shenyang 110015, peoples r china. hokkaido univ, res grp interface control engn, grad sch engn, kita ku, sapporo, hokkaido 0608628, japan.;yu, zm (reprint author), chinese acad sci, state key lab corros & protect, inst met res, wencui rd 62, shenyang 110015, peoples r china
关键词	Oxidation Sulfidation AlRe And Re Coatings Cmsx-4 Superalloy Ni-cr Alloys Tribological Properties Sulfur Pressures Behavior Vacuum Chromium Ti(y)n Size Pa
URL	查看原文
WOS记录号	WOS:000172795600005
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36892
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. M. Yu,T. Narita. High-temperature corrosion resistance of Al-Re and Re coatings[J]. Oxidation of Metals,2001,56(5-6):467-493.
APA	Z. M. Yu,&T. Narita.(2001).High-temperature corrosion resistance of Al-Re and Re coatings.Oxidation of Metals,56(5-6),467-493.
MLA	Z. M. Yu,et al."High-temperature corrosion resistance of Al-Re and Re coatings".Oxidation of Metals 56.5-6(2001):467-493.