原子力显微镜下LY12铝合金的微生物腐蚀行为

李松梅; 刘建华; 吴昊

原子力显微镜下LY12铝合金的微生物腐蚀行为

北京航空航天大学材料科学与工程系

基金项目: 高校博士点基金项目(1999000622)

详细信息

作者简介:
李松梅(1964-),女,黑龙江齐齐哈尔人,副教授,100083 ,北京.

中图分类号: TG 146.2⁺3
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- 被引次数: 0
出版历程
- 收稿日期: 2002-02-27
- 网络出版日期: 2003-05-31

Study of Microbiologically Influenced Corrosion of LY12 Aluminum Alloy with Atomic Force Microscopy

Dept. of Materials Science and Engineering, Beijing University o f Aeronautics and Astronautics

摘要

摘要: 采用原子力显微镜对硫酸盐还原细菌引起的LY12铝合金腐蚀进行了研究.分别研究了不同质量分数的Fe²⁺, Cl^-, SO^2-₄离子对硫酸盐还原细菌(SRB)引起的LY12铝合金腐蚀的影响.Fe²⁺质量分数的增加会使腐蚀程度增加.随着Cl^-质量分数的增加,局部腐蚀也会严重.在一定质量分数范围内,SO^2-₄加速腐蚀;当超过一定质量分数后,SO^2- ₄会减缓腐蚀.当SO^2-₄离子质量分数从0.80%增加到1.50%时,溶液腐蚀性有所降低.通过原子力显微镜的研究,可以直观的说明电化学研究的结果和各影响因素的作用.
- 硫酸盐还原细菌 /
- 腐蚀 /
- 铝合金 /
- 原子力显微镜
Abstract: Sulfate-reducing bacteria induced corrosion of aluminum alloy LY12 was investig ated by using atomic force microscopy, as a function of concentrations of Fe²⁺, Cl^-, SO^2-₄ ions of the test solution. With in creasing Fe²⁺ concentration, the corrosion of LY12 alloy was obviously pro moted. Similar effect was observed with the addition of Cl^- into the solution. The SO^2-₄ ion exhibited a promoting effect on corrosion at lo wer concentration and a reduced effect at higher concentration. According to th e result with AFM, the data measured by electrochemical method can be confirmed and showed, and the effect of Fe²⁺, Cl^-, SO^2-₄ ions can be demonstrated by atomic force microscopy(AFM).
- sulfate-reducing bacteria /
- corrosion /
- aluminium alloys /
- atomic force microscop y

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参考文献(1)

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