Formation Mechanism and Corrosion Performance of Phosphate Conversion Coatings on AZ91 and Mg-Gd-Y-Zr Alloy
文献类型：期刊论文
| 作者 | Lu, XP; Chen, YY; Zhang, CY; Zhang, T1,2; Yu, BX; Xu, HB; Wang, FH |
| 刊名 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| 出版日期 | 2018-01-18 |
| 卷号 | 165期号:10页码:C601-C607 |
| ISSN号 | 0013-4651 |
| DOI | 10.1149/2.0221810jes |
| 英文摘要 | The microstructure, phase composition and corrosion resistance of phosphate conversion coating (PCC) on AZ91D and Mg-Gd-Y-Zr alloy were investigated to understand the coating formation mechanism. It was found that the Volta potential difference between the second phase and alpha-Mg provides the main driving force for deposition of MgHPO4 inner layer. Mg dissolution rate is accelerated in Mg-RE (where RE represents rare earth elements) alloy at the beginning of the treatment, leading to formation of a dense and protective conversion coating on Mg-RE compared to AZ91D Mg. Electrochemical noise signals and H-2 evolution rate (HER) obtained during coating formation process were used to investigate and predict the microstructure and corrosion performance of the conversion coatings. A dense and protective conversion layer is produced if the noise resistance is high and HER is relatively low in the final stage of coating growth. (C) 2018 The Electrochemical Society. |
| 学科主题 | Electrochemistry ; Materials Science, Coatings & Films |
| 语种 | 英语 |
| WOS记录号 | WOS:000441061800062 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80236]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, Shenyang 110819, Liaoning, Peoples R China 2.Harbin Engn Univ, Corros & Protect Lab, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Heilongjiang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China 4.Univ Sci & Technol, Coll Chem Engn, Anshan 114051, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, XP,Chen, YY,Zhang, CY,et al. Formation Mechanism and Corrosion Performance of Phosphate Conversion Coatings on AZ91 and Mg-Gd-Y-Zr Alloy[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2018,165(10):C601-C607. |
| APA | Lu, XP.,Chen, YY.,Zhang, CY.,Zhang, T.,Yu, BX.,...&Wang, FH.(2018).Formation Mechanism and Corrosion Performance of Phosphate Conversion Coatings on AZ91 and Mg-Gd-Y-Zr Alloy.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,165(10),C601-C607. |
| MLA | Lu, XP,et al."Formation Mechanism and Corrosion Performance of Phosphate Conversion Coatings on AZ91 and Mg-Gd-Y-Zr Alloy".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 165.10(2018):C601-C607. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。