Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water

IMR OpenIR

	Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water
	Guo, Y. -L.; Han, E. -H.; Wang, J. -Q.; ehhan@imr.ac.cn
	2015
发表期刊	MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
ISSN	0947-5117
卷号	66 期号:7 页码:670-680
摘要	Nuclear grade 316LN stainless steel with different surface states are prepared: electropolished and ground to 240 grit. Surface topography, surface Volta potential distribution, and nanohardness distribution on cross-sectional surface are investigated, respectively. Oxide films on the ground and electropolished samples after immersion in high temperature pressurized (HTP) water for 0.1, 168, and 366 h were studied using various methods. Distinct from electropolished surface, the ground surface is featured by a rugged surface and a heterogeneous distribution of surface Volta potential. A thicker (similar to 28 mu m) cold-worked layer was introduced by grinding. More crystallites were precipitated on the ground surface, resulting from the existence of high-energy sites with higher residual strain and higher electrochemical activity and a less protective inner layer. The oxidation rate was reduced by electropolishing and a thinner oxide film was formed, due to the formation of a more protective oxide film with higher content of chromium (Cr). The mechanism of oxide film formation was further discussed.
部门归属	[guo, y. -l.] univ sci & technol beijing, natl ctr mat serv safety, beijing 100083, peoples r china ; [han, e. -h. ; wang, j. -q.] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china
资助者	National Science and Technology Major Project [2011ZX06004-009]; Special Funds for the Major State Basic Research Projects [G2011CB610501]
收录类别	sci
语种	英语
WOS记录号	WOS:000357332900008
引用统计	被引频次：17[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/321006/74795
专题	中国科学院金属研究所
通讯作者	ehhan@imr.ac.cn
推荐引用方式 GB/T 7714	Guo, Y. -L.,Han, E. -H.,Wang, J. -Q.,et al. Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2015,66(7):670-680.
APA	Guo, Y. -L.,Han, E. -H.,Wang, J. -Q.,&ehhan@imr.ac.cn.(2015).Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,66(7),670-680.
MLA	Guo, Y. -L.,et al."Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 66.7(2015):670-680.