| 基于固体培养基(SCM)的镁合金的微生物腐蚀 |
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| 引用本文： | 王强,刘耀辉,宋雨来,张大伟,于思荣. 基于固体培养基(SCM)的镁合金的微生物腐蚀[J]. 吉林大学学报(工学版), 2009, 39(3): 604-0607 |
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| 作者姓名： | 王强 刘耀辉 宋雨来 张大伟 于思荣 |
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| 作者单位： | 1. 吉林大学,材料科学与工程学院,长春,130022
2. 吉林大学,汽车材料教育部重点实验室,长春,130022 |
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| 基金项目： | 吉林省科技发展重大项目(20040315);;长春市科技发展计划项目(2007016) |
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| 摘 要： | 采用固体培养基贴片法研究了镁合金的微生物腐蚀行为。利用扫描电镜(SEM)、极化曲线研究了AZ91镁合金在无菌和有硫酸盐还原菌体系中的腐蚀行为。通过形貌对比及电化学分析发现,硫酸盐还原菌加速了镁合金的腐蚀。细菌影响下的腐蚀形貌的主要特征是点蚀。细菌的代谢过程所导致的电极的阴极去极化加速了镁合金的点蚀的形成和发展。
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| 关 键 词： | 材料失效与保护 镁合金 微生物腐蚀 固体贴片法 固体培养基 AZ91 |
| 收稿时间： | 2007-12-03 |
| 修稿时间： | 2008-03-03 |
Microbiologically influenced corrosion of magnesium alloy based on solid culture medium |
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| WANG Qiang,LIU Yao-hui,SONG Yu-lai,ZHANG Da-wei,YU Si-rong. Microbiologically influenced corrosion of magnesium alloy based on solid culture medium[J]. Journal of Jilin University:Eng and Technol Ed, 2009, 39(3): 604-0607 |
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| Authors: | WANG Qiang LIU Yao-hui SONG Yu-lai ZHANG Da-wei YU Si-rong |
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| Affiliation: | 1.College of Materials Science and Engineering, Jilin University, Changchun 130022, China; 2.Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022, China |
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| Abstract: | The Microbiologically Influenced Corrosion (MIC) of magnesium alloy was investigated using a special designed corrosion method, which was called solid culture medium adherence corrosion method. Scanning electron microscopy (SEM) and polarization curves were employed to analyze the microbiologically influenced corrosion behavior of magnesium alloy. The results indicated that the appearance of SRB resulted in a rapid pitting corrosion of AZ91 electrodes. The main characteristic of the MIC of the magnesium alloy was pitting corrosion. The metabolism of SRB which involved hydrogenase was the main reason for the MIC of AZ91 alloy. The SRB accelerated the cathodic reaction through the cathodic depolarization. |
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| Keywords: | defectiveness and conservation of materials magnesium alloy microbiologically influenced corrosion solid culture medium adherence corrosion method solid culture medium AZ91 |
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