| 一种交流阻抗和弱极化相结合的腐蚀速度测量方法 |
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| 引用本文： | 郑立群,杨永宽,吴勇华,董俊华,许文虎.一种交流阻抗和弱极化相结合的腐蚀速度测量方法[J].腐蚀科学与防护技术,2006,18(6):457-460. |
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| 作者姓名： | 郑立群 杨永宽 吴勇华 董俊华 许文虎 |
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| 作者单位： | 1. 中国科学院金属研究所,沈阳,110016
2. 中国石油大港石化分公司,天津,300280 |
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| 摘 要： | 提出了交流阻抗和弱极化技术相结合的腐蚀速度测量的方法，并依此研制了CMB-4510腐蚀速度测量仪.有效地解决了线性极化技术因估算塔菲尔系数所带来的理论误差，进一步消除了因介质电阻IR降的影响产生的测量误差.结果表明，CMB-4510腐蚀速度测量仪测得的几种体系的腐蚀速度、极化电阻以及介质电阻与M398所测得结果相同；测量缓蚀剂的缓蚀效果与挂片失重法的测试结果完全吻合.
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| 关 键 词： | 弱极化 交流阻抗 腐蚀速度 测量方法 |
| 文章编号： | 1002-6495（2006）06-0457-04 |
| 收稿时间： | 2005-11-18 |
| 修稿时间： | 2006- |
A METHOD TO MEASURE CORROSION RATE BY COMBINATION OF AC IMPEDANCE AND WEAK POLARIZATION |
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| ZHENG Li-qun,YANG Yong-kuan,WU Yong-hua,Dong Jun-hua,XU Wen-hu.A METHOD TO MEASURE CORROSION RATE BY COMBINATION OF AC IMPEDANCE AND WEAK POLARIZATION[J].Corrosion Science and Protection Technology,2006,18(6):457-460. |
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| Authors: | ZHENG Li-qun YANG Yong-kuan WU Yong-hua Dong Jun-hua XU Wen-hu |
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| Affiliation: | 1. Institute of Metal Research Chinese Academy of Sciences, Shenyang 110016 ; 2. Dagang Petrochemical Company, Petrochina, Tianjin 300280 |
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| Abstract: | A method of combining AC impedance and weak polarization technology to measure corrosion rate of metals is presented.Based on this method,an instrument,CMB-4510,has been developed.The theoretical error of linear polarization technique caused by estimating Tafel constant is eliminated efficiently.And the measuring error brought by the IR drop of the medium resistance is eliminated further.A number of experiments has been done,and the results demonstrate that the corrosion rate,polarization resistance and medium resistance in several kinds of metal-meadium systems measured by the CMB-2510 are perfectly in accord with those by M398.And the results in measuring the effect of the corrosion inhibitor are also the same. |
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| Keywords: | weak polarization AC impedance corrosion rate measuring approach |
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