Protective effect of the sputtered TiAlCrAg coating on the high-temperature oxidation and hot corrosion resistance of Ti-Al-Nb alloy

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	Protective effect of the sputtered TiAlCrAg coating on the high-temperature oxidation and hot corrosion resistance of Ti-Al-Nb alloy
	Y. J. Xi; F. H. Wang; L. L. He
	2004
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	20 期号:6 页码:724-727
摘要	The effect of a sputtered Ti-48Al-8Cr-2Ag (at. pct) coating on the oxidation resistance of the cast Ti-46.5Al-5Nb (at. pct) alloy was investigated in air at 1000similar to1100degreesC. Hot corrosion in molten 75 wt pct Na2SO4+25 wt pct K2SO4 was investigated at 900degreesC. The scale on the cast TiAlNb tends to spall in air, while the scale on coating is very adherent. The sputtered Ti-48Al-8Cr-2Ag coating remarkably improved high temperature oxidation resistance of the cast Ti-46.5Al-Ob alloy because of the formation of an adherent Al2O3 scale. Due to the inward diffusion of Cr, Kirkendall voids were found at the coating/bstrate interface. TiAlCrAg coating provided excellent hot corrosion resistance for TiAlNb alloy in molten 75 wt pct Na2SO4+25 wt pct K2SO4 at 900degreesC due to the formation of a continuous Al2O3 scale.
部门归属	chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china. shenyang natl lab matsci, met res inst, shenyang 110016, peoples r china.;xi, yj (reprint author), chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china;yjxi@imr.ac.cn
关键词	High Temperature Oxidation Tialcrag Coating Hot-corrosion Intermetallic-compound Nanocrystallization Behavior
URL	查看原文
WOS记录号	WOS:000225623300024
引用统计	被引频次：7[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/321006/35646
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Xi,F. H. Wang,L. L. He. Protective effect of the sputtered TiAlCrAg coating on the high-temperature oxidation and hot corrosion resistance of Ti-Al-Nb alloy[J]. Journal of Materials Science & Technology,2004,20(6):724-727.
APA	Y. J. Xi,F. H. Wang,&L. L. He.(2004).Protective effect of the sputtered TiAlCrAg coating on the high-temperature oxidation and hot corrosion resistance of Ti-Al-Nb alloy.Journal of Materials Science & Technology,20(6),724-727.
MLA	Y. J. Xi,et al."Protective effect of the sputtered TiAlCrAg coating on the high-temperature oxidation and hot corrosion resistance of Ti-Al-Nb alloy".Journal of Materials Science & Technology 20.6(2004):724-727.