Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel

doi:10.1016/j.jmst.2021.03.014

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel
	Wang, Changgang 1; Ma, Rongyao 1; Zhou, Yangtao 1; Liu, Yang 1; Daniel, Enobong Felix 1,2; Li, Xiaofang 3; Wang, Pei 1; Dong, Junhua 1; Ke, Wei 3
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-12-10
卷号	93 页码:232-243
关键词	13Cr4Ni martensitic stainless steel Rare earth modifying inclusion Al2O3/MnS inclusion Metastable pitting corrosion Stable pitting corrosion
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.03.014
通讯作者	Ma, Rongyao(ryma14b@imr.ac.cn) ; Wang, Pei(pwang@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn)
英文摘要	In this study, the pitting corrosion behavior of 13Cr4Ni martensitic stainless steel (BASE) and that modified with rare earth (REM) in 0.1 mol/L NaCl solution were characterized. Techniques such as automatic secondary electron microscope (ASPEX PSEM detector), scanning electron microscope (SEM), transmission electron microscope (TEM), scanning Kelvin probe force microscope (SKP), potentiodynamic and potentiostatic polarizations were employed. The results obtained indicate that BASE steel contains Al2O3/MnS, Al2O3 and MnS inclusions, while REM steels contain (La, Ce, Cr, Fe)-O and (La, Ce, Cr, Fe)-O-S inclusions. Compared with BASE steel, REM steel is more susceptible to induce the metastable pitting nucleation and repassivation, whereas it restrains the transition from metastable pitting to stable pitting. Adding 0.021% rare earth element to BASE steel can reduce the number and area of inclusions, while that of 0.058% can increase the number and enlarged the size of inclusions, which is also the reason that pitting corrosion resistance of 58REM steel is slightly lower than that of 21REM steel. In the process of pitting corrosion induced by Al2O3/MnS inclusions, MnS is preferentially anodic dissolved, and also the matrix contacted with Al2O3 is subsequently anodic dissolved. For REM steels, anodic dissolution preferentially occurs at the boundary between inclusions and matrix, while (La, Ce, Cr, Fe)-O inclusions chemically dissolve in local acidic environment or are separated from steel matrix. The chemically dissolved substance (La3+ and Ce3+) of (La, Ce, Cr, Fe)-O inclusions are concentrated in pitting pits, which inhibits its continuous growth. (C) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals.
资助项目	National Natural Science Foun-dation of China[51801219] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019193] ; Scientific Research Project of China Three Gorges Corporation[JD-YJ-05006] ; National Key Research and Development Program of China[2017YFB0702302]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000718115300004
资助机构	National Natural Science Foun-dation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Scientific Research Project of China Three Gorges Corporation ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167226]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma, Rongyao; Wang, Pei; Dong, Junhua
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Environm Corros Ctr Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Changgang,Ma, Rongyao,Zhou, Yangtao,et al. Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,93:232-243.
APA	Wang, Changgang.,Ma, Rongyao.,Zhou, Yangtao.,Liu, Yang.,Daniel, Enobong Felix.,...&Ke, Wei.(2021).Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,93,232-243.
MLA	Wang, Changgang,et al."Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 93(2021):232-243.