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| 高温高压下P110钢CO2腐蚀电化学行为研究 | |
| 引用本文： | 苗健,白真权,严文,梁明华. 高温高压下P110钢CO2腐蚀电化学行为研究[J]. 油气储运, 2006, 25(1): 37-41 |
| 作者姓名： | 苗健 白真权 严文 梁明华 |
| 作者单位： | 1. 中国石油管材研究所 2. 西安交通大学材料学院 3. 西安工业学院材料化工学院 4. 中油集团公司石油管力学和环境行为重点实验室 |
| 基金项目： | 国家重点基础研究发展计划(973计划)，国家高技术研究发展计划(863计划)，中国石油天然气集团公司资助项目，陕西省西安市科技计划 |
| 摘 要： | 运用电化学测量技术,研究了P110油套管钢在模拟油田现场腐蚀环境中的腐蚀电化学行为.研究结果表明,随着试验时间的延长,腐蚀速率逐渐降低.在试验时间达到72 h后,腐蚀速率降低的趋势变缓;阳极极化曲线上出现了类似于钝化的现象.阴极极化曲线的Tafel斜率变化较大,P110钢的阴极反应趋势已经不同;P110钢的EIS表明极化电阻逐渐增大,电极反应由最初的活化控制变为由扩散和活化共同控制. |
| 关 键 词： | P110钢 CO2腐蚀 极化曲线 电化学行为 试验 |
| 收稿时间： | 2005-09-26 |
| 修稿时间： | 2005-09-26 |
Study on the CO2 Corrosion Reaction Process of P110 Steel at High Temperature and High Pressure |
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| MAIO Jian,BAI Zhenquan et al. Study on the CO2 Corrosion Reaction Process of P110 Steel at High Temperature and High Pressure[J]. Oil & Gas Storage and Transportation, 2006, 25(1): 37-41 | |
| Authors: | MAIO Jian BAI Zhenquan et al |
| Abstract: | The corrosion behaviors of P110 steel at the stimulated environments of oil field are systematically studied with electrochemical impedance spectroscopy (EIS) and polarization curves. The results show that the corrosion rate is gradually reduces with the increase of experimental time. The tendency of corrosion reducing rate becomes very slow as 72 hours of experimental time arrived. The phenomena similar to passivation for P110 steel will be taken place on the anodic polarization curves. When Tafel slopes of the cathodic polarization curves change greatly,the tendency of cathodic reaction for P110 steel is different. EIS results of P110 steel indicate that the polarization resistance increases gradually and the electrode reaction are controlled by both diffusion and activation in comparison with activation only at the beginning. |
| Keywords: | P110 steel CO2 corrosion polarization curves EIS experiment |
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