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| 低Cr钢在H_2S/CO_2环境中的腐蚀行为研究 | |
| 引用本文： | 吕祥鸿,赵国仙,张建兵,韩勇,许文研.低Cr钢在H_2S/CO_2环境中的腐蚀行为研究[J].材料工程,2009(10). |
| 作者姓名： | 吕祥鸿 赵国仙 张建兵 韩勇 许文研 |
| 作者单位： | 1. 西安石油大学,材料科学与工程学院,西安,710065 2. 西安石油大学,机械工程学院,西安,710065 3. 西安摩尔石油工程实验室,西安,710065 4. 天津钢管集团股份有限公司,天津,300301 |
| 基金项目： | 教育部新世纪优秀人才支持计划项目，国家自然科学基金项目，西安石油大学科技基金研究项目 |
| 摘 要： | 运用腐蚀失重和电化学测量技术,研究普通低Cr油套管用钢在模拟塔里木油田环境的H2S/CO2腐蚀行为.结果表明:在模拟CO2腐蚀环境中,Cr元素在腐蚀产物膜中的富集显著改善了膜的保护性,低Cr钢表现出良好的抗CO2均匀腐蚀和局部腐蚀能力;在模拟CO2/H2S腐蚀条件下,H2S腐蚀占主导作用,其均匀腐蚀速率远小于单独CO2腐蚀环境中的均匀腐蚀速率;低Cr材料H2S腐蚀的阳极极化曲线存在较为明显的钝化区,交流阻抗图谱(EIS)拟合的H2S腐蚀极化电阻远大于CO2腐蚀极化电阻. |
| 关 键 词： | 低Cr油套管用钢 H2S/C02腐蚀 均匀腐蚀 局部腐蚀 极化曲线 极化电阻 |
Corrosion Behavior of Low Cr Steel at the Simulated H_2S/CO_2 Environments |
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| LU Xiang-hong,ZHAO Guo-xian,ZHANG Jian-bing,HAN Yong,XU Wen-yan.Corrosion Behavior of Low Cr Steel at the Simulated H_2S/CO_2 Environments[J].Journal of Materials Engineering,2009(10). | |
| Authors: | LU Xiang-hong ZHAO Guo-xian ZHANG Jian-bing HAN Yong XU Wen-yan |
| Affiliation: | LU Xiang-hong1,ZHAO Guo-xian1,ZHANG Jian-bing2,HAN Yong3,XU Wen-yan4(1 School of Material Science , Engineering,Xi'an Shiyou University,Xi'an 710065,China,2 School of Mechanical Engineering,3 Xi'an Maurer Petroleum Engineering Laboratory,4 Tianjin Pipe Corporation,Tianjin 300301,China) |
| Abstract: | H2S/CO2 corrosion behavior of low Cr casing and tubing steel at the simulated environments of Tarim oilfield was studied with mass loss and electrochemical impedance spectroscopy(EIS) and polarization curves.The results show that low Cr steel has the superior CO2 uniform and local corrosion resistance because Cr-rich in corrosion scale which improve the protection of corrosion scale.At the simulated CO2/H2S environment,H2S electrochemical corrosion dominates the corrosion course,and the uniform corrosion ra... |
| Keywords: | low Cr casing and tubing steel H2S/CO2 corrosion uniform corrosion local corrosion polarization curve polarization resistance |
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