Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic-Martensitic Steel by Enhanced Diffusion of Mn

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	Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic-Martensitic Steel by Enhanced Diffusion of Mn
	Chen, Shenghu; Jin, Xiaojie; Rong, Lijian; chensh@imr.ac.cn
	2016
发表期刊	OXIDATION OF METALS
ISSN	0030-770X
卷号	85 期号:42371 页码:189-203
摘要	The high-temperature oxidation behavior of coarse-grained (CG) and ultrafine-grained (UFG) 9 %Cr ferritic-martensitic steel in air at 923 K up to 500 h was investigated. The UFG sample showed considerably greater oxidation resistance than the CG sample due to the fact that the outward diffusion of Mn was enhanced and the formation of Mn-rich oxide favored in the former. A duplex-layered scale structure consisting of an outer Fe-rich (Fe, Cr)(2)O-3 layer and an inner Cr-rich (Fe, Cr)(2)O-3 layer was identified on the CG sample, while a thin compact scale with a mixture of (Fe, Cr)(2)O-3, MnCr2O4 and Mn2O3 oxides developed on the UFG sample. A continuous and stable scale composed of Cr-rich (Fe, Cr)(2)O-3 and MnCr2O4 on the UFG sample in the early stage served as a protective barrier between the matrix and environment. With increased oxidation time, formation of Mn2O3 with low growth rate improved the compactness of oxide scale.
部门归属	[chen, shenghu ; jin, xiaojie ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china
关键词	9 %cr Ferritic-martensitic Steel High Temperature Oxidation Coarse-grained Ultrafine-grained
资助者	National Natural Science Foundation of China [91226204]
收录类别	sci
语种	英语
WOS记录号	WOS:000369016900014
引用统计	被引频次：26[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/321006/74901
专题	中国科学院金属研究所
通讯作者	chensh@imr.ac.cn
推荐引用方式 GB/T 7714	Chen, Shenghu,Jin, Xiaojie,Rong, Lijian,et al. Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic-Martensitic Steel by Enhanced Diffusion of Mn[J]. OXIDATION OF METALS,2016,85(42371):189-203.
APA	Chen, Shenghu,Jin, Xiaojie,Rong, Lijian,&chensh@imr.ac.cn.(2016).Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic-Martensitic Steel by Enhanced Diffusion of Mn.OXIDATION OF METALS,85(42371),189-203.
MLA	Chen, Shenghu,et al."Improvement in High Temperature Oxidation Resistance of 9 %Cr Ferritic-Martensitic Steel by Enhanced Diffusion of Mn".OXIDATION OF METALS 85.42371(2016):189-203.