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| N80钢CO2腐蚀电极过程交流阻抗分析 | |
| 引用本文： | 陈长风,路民旭,赵国仙,白真权,严密林,杨延清.N80钢CO2腐蚀电极过程交流阻抗分析[J].金属学报,2002,38(7):770-774. |
| 作者姓名： | 陈长风 路民旭 赵国仙 白真权 严密林 杨延清 |
| 作者单位： | 1. 中国石油天然气集团公司管材研究所,西安,710065;西北工业大学材料科学与工程学院,西安,710072 2. 中国石油天然气集团公司管材研究所,西安,710065 3. 西北工业大学材料科学与工程学院,西安,710072 |
| 基金项目： | 国家重点基础研究发展规划项目G1999065004及中国石油天然气集团公司石油管力学，环境行为重点实验室基金项目资助 |
| 摘 要： | 利用交流阻抗技术研究了N80钢在不同介质条件下CO2腐蚀交流阻抗图谱的特征，结果表明，N80油套管钢CO2腐蚀EIS曲线具有三个时间常数，其中低频感抗弧与试样表面活化溶解有关，低频容抗弧与试样表面腐蚀产物膜生成有关。随着试样表面腐蚀产物膜覆盖度增大，EIS曲线低频区感抗弧逐渐缩小，容抗弧逐渐扩大。进一步讨论了试样表面腐蚀产物膜成膜情况与电极反应过程的有关。 |
| 关 键 词： | CO2腐蚀 阻抗 N80钢 |
| 文章编号： | 0412-1961(2002)04-0770-05 |
| 修稿时间： | 2001年8月27日 |
THE EIS ANALYSIS OF ELECTRODE REACTIONS OF CO2 CORROSION OF N80 STEEL |
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| CHEN Changfeng,LU Minxu,ZHAO Guoxian,BAI Zhenquan,YAN Milin,YANG Yanqing Tubular Goods Research Center of CNPC,Xi'an School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an Correspondent: CH.THE EIS ANALYSIS OF ELECTRODE REACTIONS OF CO2 CORROSION OF N80 STEEL[J].Acta Metallurgica Sinica,2002,38(7):770-774. | |
| Authors: | CHEN Changfeng LU Minxu ZHAO Guoxian BAI Zhenquan YAN Milin YANG Yanqing Tubular Goods Research Center of CNPC Xi'an School of Materials Science and Engineering Northwestern Polytechnical University Xi'an Correspondent: CH |
| Affiliation: | CHEN Changfeng1,2,LU Minxu1,ZHAO Guoxian1,BAI Zhenquan1,YAN Milin1,YANG Yanqing21) Tubular Goods Research Center of CNPC,Xi'an 7100652) School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072Correspondent: CH |
| Abstract: | The electrochemical impedance spectroscopy (EIS) was used to analyse the EIS characters of CO2 corrosion of N80 steel in various electrolytes. It was found that the EIS characters have three time-loops, in which at low frequency the inductive arc was related with surface activation dissolution of steel and the capacitive arc was related with formation of corrosion film. With increasing the coverage of corrosion scale, the inductive arc would reduce and capacitive arc expand. Moreover the relationship between formation of corrosion scale and electrode reactions was discussed. |
| Keywords: | CO2 corrosion electrochemical impedance spectroscopy(EIS) N80 steel |
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