Influence of cerium on passivity behavior of wrought AZ91 alloy
文献类型：期刊论文
| 作者 | H. N. Wang ; Y. Li ; F. H. Wang |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2008 |
| 卷号 | 54期号:2页码:706-713 |
| 关键词 | Passivity Wrought AZ91 alloy Cerium Impedance Donor concentration (N(d)) corrosion behavior magnesium alloy microstructure chloride phase films |
| ISSN号 | 0013-4686 |
| 中文摘要 | in this paper, more focus had been put on the passivity behavior of wrought AZ91 alloy with 1.5 mass% Ce. The passive current density of wrought AZ91 alloy increased with addition of Ce and the passive film became unstable. Structures and compositions of the passive films formed on wrought AZ91 alloy without and with Ce in 0.01 M NaOH aqueous solution were analyzed by potentiostatic polarization, potentiostatic-galvanostatic (P-G) transient technique and X-ray photoelectron spectroscopy (XPS). The results showed that Ce only accumulated in the inner layer of passive film in the form of CeO(2). Further analysis revealed that there were two main effects of Ce on the passive process of wrought AZ91 alloy: first, the existence of CeO(2) in inner layer of passive film made mass transport through the passive film follow tangent hyperbolic (T) impedance instead of Warburg impedance (W): second, donor concentration (N(d)) of the passive film increased by a factor 10 when 1.5 mass% Ce existed in wrought AZ91 alloy, which led to the higher passivity current density. (C) 2008 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33128]  |
| 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 | H. N. Wang,Y. Li,F. H. Wang. Influence of cerium on passivity behavior of wrought AZ91 alloy[J]. Electrochimica Acta,2008,54(2):706-713. |
| APA | H. N. Wang,Y. Li,&F. H. Wang.(2008).Influence of cerium on passivity behavior of wrought AZ91 alloy.Electrochimica Acta,54(2),706-713. |
| MLA | H. N. Wang,et al."Influence of cerium on passivity behavior of wrought AZ91 alloy".Electrochimica Acta 54.2(2008):706-713. |
入库方式： OAI收割
来源：金属研究所
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