Effect of small addition of Mn on the passivation of Zn in 0.1 M NaOH solution
文献类型：期刊论文
| 作者 | X. L. Shang ; B. Zhang ; E. H. Han ; W. Ke |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2011 |
| 卷号 | 56期号:3页码:1417-1425 |
| 关键词 | Zn Mn additions Passivation XPS AFM electrochemical impedance spectroscopy corrosion-resistance alloy coatings protective ability doped zno zinc dissolution steel films co |
| ISSN号 | 0013-4686 |
| 中文摘要 | The passivation of pure Zn (99.995 wt%) and Zn-0.4Mn (0.4 wt% Mn) alloy in a deaerated 0.1 M NaOH solution (pH 12.9) was investigated by electrochemical measurements. X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The potentiodynamic polarization and electrochemical impedance measurements show that addition of 0.4 wt% Mn can decrease the passive current density of Zn in the passive region. XPS surface analysis indicates that there is approximately 1.0-2.0 at% Mn(2+) being incorporated into the passive film on Zn-0.4Mn alloy with Mn content being higher in the outer layers. Mott-Schottky analysis shows that the incorporated Mn can decrease concentration of defects in the film. AFM observations disclose that Mn can decrease the grain size of the film. The mechanism by which Mn additions improve the passivity of Zn is that the incorporated Mn can inhibit ions transportation in the film and inhibit its growth. Meanwhile. Mn can also promote the nucleation of Zn oxides and decrease film porosity. (C) 2010 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30643]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. L. Shang,B. Zhang,E. H. Han,et al. Effect of small addition of Mn on the passivation of Zn in 0.1 M NaOH solution[J]. Electrochimica Acta,2011,56(3):1417-1425. |
| APA | X. L. Shang,B. Zhang,E. H. Han,&W. Ke.(2011).Effect of small addition of Mn on the passivation of Zn in 0.1 M NaOH solution.Electrochimica Acta,56(3),1417-1425. |
| MLA | X. L. Shang,et al."Effect of small addition of Mn on the passivation of Zn in 0.1 M NaOH solution".Electrochimica Acta 56.3(2011):1417-1425. |
入库方式： OAI收割
来源：金属研究所
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