Influence of pre-oxidation on the hot corrosion of Ti3SiC2 in the mixture of Na2SO4-NaCl melts

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	Influence of pre-oxidation on the hot corrosion of Ti3SiC2 in the mixture of Na2SO4-NaCl melts
	G. M. Liu; M. S. Li; Y. C. Zhou; Y. M. Zhang
	2006
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	48 期号:3 页码:650-661
摘要	Polycrystalline Ti3SiC2 suffered from serious hot corrosion attack in the mixture of 75wt.%Na2SO4 + 25wt.%NaCl melts at 850 degrees C. In order to improve the hot corrosion resistance of this material, pre-oxidation treatment was conducted at 1200 degrees C in air for 2 h. A duplex oxide scale with an outer layer of TiO2 and an inner layer of a mixture of TiO2 and SiO2 was formed during the pre-oxidation. Because the outer oxide layer of the pre-oxidation treated specimens could inhibit hot corrosion process, they exhibited good hot corrosion resistance in the mixture of 75wt.%Na2SO4 + 25wt.%NaCl melts at 850 degrees C for 50 h. However, during the hot corrosion the outer layer of TiO2 would degrade gradually. Once the outer layer damaged, the hot corrosion rate increased sharply, the corrosion behavior was similar to Ti3SiC2 corroded under the same conditions. The microstructure and phase compositions of the hot corrosion samples were investigated by SEM/EDS and XRD. (C) 2005 Elsevier Ltd. All rights reserved.
部门归属	nanchang inst aeronaut technol, dept mat sci & engn, nanchang 330034, peoples r china. chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;liu, gm (reprint author), nanchang inst aeronaut technol, dept mat sci & engn, 173 shanghai rd, nanchang 330034, peoples r china;gmliu@imr.ac.cn tisic@163.com
关键词	Titanium Silicon Carbide Pre-oxidation Hot Corrosion Na2so4-nacl Melts Titanium-silicon Carbide Bulk Ceramics 1000-degrees-c Oxidation Behavior Air
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WOS记录号	WOS:000236136600010
引用统计	被引频次：14[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/321006/34355
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Liu,M. S. Li,Y. C. Zhou,et al. Influence of pre-oxidation on the hot corrosion of Ti3SiC2 in the mixture of Na2SO4-NaCl melts[J]. Corrosion Science,2006,48(3):650-661.
APA	G. M. Liu,M. S. Li,Y. C. Zhou,&Y. M. Zhang.(2006).Influence of pre-oxidation on the hot corrosion of Ti3SiC2 in the mixture of Na2SO4-NaCl melts.Corrosion Science,48(3),650-661.
MLA	G. M. Liu,et al."Influence of pre-oxidation on the hot corrosion of Ti3SiC2 in the mixture of Na2SO4-NaCl melts".Corrosion Science 48.3(2006):650-661.