| X70钢在含SO2的弱酸性溶液中的腐蚀行为的电化学研究 |
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| 引用本文： | 郭红,何晓英.X70钢在含SO2的弱酸性溶液中的腐蚀行为的电化学研究[J].信阳师范学院学报(自然科学版),2007,20(1):62-65. |
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| 作者姓名： | 郭红 何晓英 |
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| 作者单位： | 1. 山东理工大学,分析测试中心,山东,淄博,255049;西华师范大学,化学化工学院,四川,南充,637002
2. 西华师范大学,化学化工学院,四川,南充,637002 |
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| 基金项目： | 四川省应用基础研究计划 |
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| 摘 要： | 用动电位扫描法和交流阻抗法研究了弱酸性溶液中SO2的存在、溶液酸度、温度、浸泡时间和极化电位对X70钢腐蚀行为的影响.结果表明,X70钢在含有SO2的弱酸性溶液中的腐蚀反应过程是受阳极控制的;SO2的存在促进了X70钢腐蚀反应阳极过程的进行;增加酸度和提高温度,主要促进了X70钢腐蚀反应的阴极过程;随着浸泡时间的延长和极化电位的增大,X70钢腐蚀反应的阻抗的模值逐渐减小,高频端相角最大处逐渐向高频方向漂移,相角最大值不断减小.
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| 关 键 词： | X70钢 腐蚀 |
| 文章编号： | 1003-0972（2007）01-0062-04 |
| 收稿时间： | 2006-06-08 |
| 修稿时间： | 2006-06-082006-10-09 |
Electrochemical Study on the Corrosion Behavior of X70 Steel in Acid Solutions with SO2 |
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| GUO hong,HE Xiao-ying.Electrochemical Study on the Corrosion Behavior of X70 Steel in Acid Solutions with SO2[J].Journal of Xinyang Teachers College(Natural Science Edition),2007,20(1):62-65. |
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| Authors: | GUO hong HE Xiao-ying |
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| Abstract: | The influence exerted by the addition of SO2,acidity of solution,temperature,immersion time and polarization potentials on corrosion behavior of X70 steel in weak acidic solutions were studied by means of potentiodynamic polarization curves and electrochemical impendence spectroscopy.The results showed that corrosion process of X70 steel in weak acidic solution with SO2 was controlled by anode reaction.The addition of SO2 promoted the anodic process of corrosion of X70 steel,increasing of the acidity and temperature of the solution promoted the cathodic process mostly.With the extension of immersion time and polarization potentials,the mould value of impedance is reduced gradually,the maximum of phase angle drift to high-frequency direction and decreased gradually. |
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| Keywords: | SO2 |
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