| Initial corrosion behaviors of AZ91 magnesium alloy in the presence SO2 |
| C. Lin; X. G. Li
|
| 2004
|
| 发表期刊 | Journal of University of Science and Technology Beijing
 |
| ISSN | 1005-8850
|
| 卷号 | 11期号:5页码:433-441 |
| 摘要 | The effects of SO2 on the initial atmospheric corrosion of AZ91D magnesium alloy were investigated in laboratory. Metallographic observation, SEM (Scanning Electron Microscopy), XRD (X-ray Diffraction) and XPS (X-ray Proton Spectrograph) were used to analyze and discuss the initial surface morphology of corrosion layers and corrosion products. The corrosion rate of the alloy increases with increasing the content of SO2. The initial attack has the characteristics of localized corrosion and preferentially concentrates on a phase. MgO and Mg(OH)(2) form at first, which provide a protective layer, then the existence of SO2 decreases the pH of the thin solution on the alloy, accelerates dissolution process, and promotes the formation of MgSO(4)(.)6H(2)O and MgSO(4)(.)6H(2)O, meanwhile cracks were found on the corrosion products with corrosion continuation. These soluble corrosion products and the cracks provide the paths for filtering oxygen and corrosion pollutants into the matrix, which results in severe localized corrosion and the loss of protective function of film. |
| 部门归属 | univ sci & technol beijing, ctr corros & protect, key lab corros eros & surface technol, beijing 100083, peoples r china. chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china.;lin, c (reprint author), univ sci & technol beijing, ctr corros & protect, key lab corros eros & surface technol, beijing 100083, peoples r china;lincwi@sohu.com
|
| 关键词 | Az91d Magnesium Alloy
So2
Initial Stages
Atmospheric Corrosion
Industry
Chloride
|
| URL | 查看原文
|
| WOS记录号 | WOS:000224633100012
|
| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/35445
|
| 专题 | 中国科学院金属研究所
|
推荐引用方式
GB/T 7714 |
C. Lin,X. G. Li. Initial corrosion behaviors of AZ91 magnesium alloy in the presence SO2[J]. Journal of University of Science and Technology Beijing,2004,11(5):433-441.
|
| APA |
C. Lin,&X. G. Li.(2004).Initial corrosion behaviors of AZ91 magnesium alloy in the presence SO2.Journal of University of Science and Technology Beijing,11(5),433-441.
|
| MLA |
C. Lin,et al."Initial corrosion behaviors of AZ91 magnesium alloy in the presence SO2".Journal of University of Science and Technology Beijing 11.5(2004):433-441.
|
修改评论