| The improvement of the corrosion resistance of 309 stainless steel in the transpassive region by nano-crystallization |
| W. Ye; Y. Li; F. H. Wang
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| 2009
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| 发表期刊 | Electrochimica Acta
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| ISSN | 0013-4686
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| 卷号 | 54期号:4页码:1339-1349 |
| 摘要 | The effect of nano-crystallization on the corrosion behavior of 309 stainless steel in the transpassive region was investigated in 0.5 M Na(2)SO(4) (pH 2) solution. Three parts defined as transpassive dissolution, secondary passivity and oxygen evolution can be observed in the transpassive potential region of the anodic polarization Curves. In the whole transpassive region the nano-crystalline coating has a smaller corrosion current density than the bulk steel, which indicates the transpassive dissolution rate is decreased by nanocrystallization. In addition. there is an obvious difference in the surface micrographs of the two materials at transpassive potentials, as scanning electron microscopy (SEM) shows. The electron probe microanalysis (EPMA) reveals that nano-crystallization improves the homogeneity of Cr on the surface. Mott-Schottky plots displays that the carrier density of the oxide film in the transpassive region is decreased by nanocrystallization. Thus, the interfacial reactions are decelerated and the corrosion resistance of the stainless steel in the transpassive region has been greatly improved by nano-crystallization. (C) 2008 Elsevier Ltd. All rights reserved. |
| 部门归属 | [ye, wei; li, ying; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;li, y (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;liying@imr.ac.cn
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| 关键词 | 309 Stainless Steel
Nano-crystalline Coating
Transpassive
Oxide Film
Epma
Iron-chromium Alloys
Dissolution Mechanism
Sulfate-solutions
Passive
Films
Metals
Ni
Cr
Molybdenum
Impedance
Stability
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| URL | 查看原文
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| WOS记录号 | WOS:000262810900026
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/32502
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
W. Ye,Y. Li,F. H. Wang. The improvement of the corrosion resistance of 309 stainless steel in the transpassive region by nano-crystallization[J]. Electrochimica Acta,2009,54(4):1339-1349.
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| APA |
W. Ye,Y. Li,&F. H. Wang.(2009).The improvement of the corrosion resistance of 309 stainless steel in the transpassive region by nano-crystallization.Electrochimica Acta,54(4),1339-1349.
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| MLA |
W. Ye,et al."The improvement of the corrosion resistance of 309 stainless steel in the transpassive region by nano-crystallization".Electrochimica Acta 54.4(2009):1339-1349.
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