ANALYSES OF SURFACE OXIDE FILMS ON GROUND ALLOY 690TT AFTER IMMERSION FOR DIFFERENT TIMES

doi:10.3724/SP.J.1037.2011.00206

IMR OpenIR

	ANALYSES OF SURFACE OXIDE FILMS ON GROUND ALLOY 690TT AFTER IMMERSION FOR DIFFERENT TIMES
	Zhang Zhiming; Wang Jianqiu; Han En-Hou; Ke Wei
通讯作者	Wang Jianqiu(wangjianqiu@imr.ac.cn)
	2011-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:7 页码:823-830
摘要	The morphologies and structures of surface oxide films grown on ground Ni. base alloy 690TT after immersion in the simulated hydrogenated primary water of pressured water reactors (PWRs) for different times were analyzed by various methods. After immersion for 35 h, the ground alloy 690TT was covered with compact oxide particles. With the increase of the immersion time, the sample surfaces were covered with scattered big oxide particles and compact small oxide particles. Regardless of the immersion time, the grown oxide films are composed of spinel oxides and metallic Ni. After immersion for 720, 1440 and 2160 h, the oxide films are composed of three layers: the outmost layer is the separated big oxide particles which are rich in Fe and Ni; the intermediate layer is the compact small oxide particles rich in Cr, Fe and Ni; the inner layer is the continuous Cr oxides. The peak decompositions of the XPS results revealed that the Cr oxides in the inner layer are probably Cr(2)O(3). The intermediate and inner layers in the oxide films could restrain the outward diffusion of metal atoms and also the inward diffusion of the oxygen atoms and then protect the matrix from further corrosion well. The average corrosion rate of the intermediate and inner layer decreased gradually with the immersion time increasing. Grinding treatment accelerated the growth of protective oxide film on alloy 690TT in the studied solution.
关键词	Ni base alloy 690TT grinding treatment immersion time oxide film protective structure
资助者	National Basic Research Program of China ; National Natural Science Foundation of China
DOI	10.3724/SP.J.1037.2011.00206
收录类别	SCI
语种	英语
资助项目	National Basic Research Program of China[2011CB610502] ; National Natural Science Foundation of China[51025104]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000294980700010
出版者	SCIENCE PRESS
引用统计	被引频次：8[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/321006/104823
专题	中国科学院金属研究所
通讯作者	Wang Jianqiu
作者单位	Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang Zhiming,Wang Jianqiu,Han En-Hou,et al. ANALYSES OF SURFACE OXIDE FILMS ON GROUND ALLOY 690TT AFTER IMMERSION FOR DIFFERENT TIMES[J]. ACTA METALLURGICA SINICA,2011,47(7):823-830.
APA	Zhang Zhiming,Wang Jianqiu,Han En-Hou,&Ke Wei.(2011).ANALYSES OF SURFACE OXIDE FILMS ON GROUND ALLOY 690TT AFTER IMMERSION FOR DIFFERENT TIMES.ACTA METALLURGICA SINICA,47(7),823-830.
MLA	Zhang Zhiming,et al."ANALYSES OF SURFACE OXIDE FILMS ON GROUND ALLOY 690TT AFTER IMMERSION FOR DIFFERENT TIMES".ACTA METALLURGICA SINICA 47.7(2011):823-830.