Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air

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	Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air
	Z. J. Lin; Y. C. Zhou; M. S. Li; J. Y. Wang
	2006
发表期刊	Journal of the European Ceramic Society
ISSN	0955-2219
卷号	26 期号:16 页码:3871-3879
摘要	The hot corrosion behavior of Na2SO4-coated Ti2AlC was investigated by means of thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy/energy dispersive spectroscopy. This carbide displays good hot corrosion resistance below the melting point of Na2SO4 while the corrosion attacks become virulent when the salt is molten. A protectively continuous Al2O3 layer forms and imparts good corrosion resistance, and consequently, the corrosion kinetics is generally parabolic at 850 degrees C. However, porous oxide scales fail to protect the Ti2AlC substrate at 900 and 1000 degrees C. The segregation of sulfur at the corrosion scale/substrate interface accelerates the corrosion of Ti2AlC. Furthermore, a convenient and efficient pre-oxidation method is proposed to improve the high-temperature hot corrosion resistance of Ti2AlC. An Al2O3 scale formed during pre-oxidation treatment can remarkably restrain the infiltration of the molten salt into the substrate and prevent the substrate from severe corrosion attacks. (c) 2005 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Ti2alc Al2o3 Corrosion High-temperature Oxidation Polycrystalline Ti2alc Carbides Behavior Ti3alc2 Alumina Phase
URL	查看原文
WOS记录号	WOS:000241841300046
引用统计	被引频次：37[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/321006/34331
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. J. Lin,Y. C. Zhou,M. S. Li,et al. Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air[J]. Journal of the European Ceramic Society,2006,26(16):3871-3879.
APA	Z. J. Lin,Y. C. Zhou,M. S. Li,&J. Y. Wang.(2006).Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air.Journal of the European Ceramic Society,26(16),3871-3879.
MLA	Z. J. Lin,et al."Hot corrosion and protection of Ti2AlC against Na2SO4 salt in air".Journal of the European Ceramic Society 26.16(2006):3871-3879.