| The influence of Ni alloying on corrosion behaviour of low alloy steels under wet/dry cyclic conditions |
| X. Chen; J. Dong; E. Han; W. Ke
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| 2007
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| 发表期刊 | Canadian Metallurgical Quarterly
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| ISSN | 0008-4433
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| 卷号 | 46期号:2页码:195-205 |
| 摘要 | The atmospheric corrosion of Ni-bearing low alloy steels was investigated by wet/dry cyclic corrosion tests (CCT) in a 0.3%NaCl solution at 30 degrees C and 60% relative humidity (RH). The prepared samples were studied using gravimetry, electrochemical corrosion tests (polarization curves (PC), electrochemical impedance spectroscopy (EIS)) and analytical techniques (SEM and XRD). The Ni-bearing steels showed higher corrosion resistance than that of mild steel in the test. The results of electrochemical tests demonstrated that the addition of Ni to mild steel restrained anodic dissolution of iron, shifted the corrosion potential (E-corr) in a noble direction and increased the corrosion resistance of rust layer by improving the adhesion and compactness of the rust layer and ameliorating the physicochemical property of the substrate/rust interfaces. The rust analysis demonstrated that Ni alloying ameliorated rust composition by facilitating the formation of fine NiFe2O4, alpha-FeOOH and decreasing the beta-FeOOH, gamma-FeOOH and Fe3O4, In addition, Ni alloying could retard the crystallization of alpha-FeOOH, Fe3O4 and gamma-FeOOH to a certain extent. |
| 部门归属 | chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;chen, x (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;jhdong@imr.ac.cn
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| 关键词 | Industrial Environments
Weathering Steels
Carbon-steel
Alpha-feooh
Fe-ni
Rust
Iron
Cr
Atmospheres
Electrodes
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| URL | 查看原文
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| WOS记录号 | WOS:000246311900010
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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/321006/33456
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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 |
X. Chen,J. Dong,E. Han,et al. The influence of Ni alloying on corrosion behaviour of low alloy steels under wet/dry cyclic conditions[J]. Canadian Metallurgical Quarterly,2007,46(2):195-205.
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| APA |
X. Chen,J. Dong,E. Han,&W. Ke.(2007).The influence of Ni alloying on corrosion behaviour of low alloy steels under wet/dry cyclic conditions.Canadian Metallurgical Quarterly,46(2),195-205.
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| MLA |
X. Chen,et al."The influence of Ni alloying on corrosion behaviour of low alloy steels under wet/dry cyclic conditions".Canadian Metallurgical Quarterly 46.2(2007):195-205.
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