| 碳钢在含热稳定性盐的N-甲基二乙醇胺介质中的腐蚀行为 |
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| 引用本文： | 韦冬萍,胡荣宗,潘丹梅,黄维雄,董瑞.碳钢在含热稳定性盐的N-甲基二乙醇胺介质中的腐蚀行为[J].腐蚀科学与防护技术,2008,20(5). |
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| 作者姓名： | 韦冬萍 胡荣宗 潘丹梅 黄维雄 董瑞 |
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| 作者单位： | 1. 厦门大学,化学化工学院化学系,现代分析科学教育部重点实验室,厦门,361005;广西民族大学,化学与生态工程学院,南宁,530006
2. 厦门大学,化学化工学院化学系,现代分析科学教育部重点实验室,厦门,361005 |
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| 摘 要： | 利用阳极极化曲线法、Tafel曲线法和电化学阻抗谱法等技术,研究含有各种模拟热稳定性盐(HSS)的N-甲基二乙醇胺(MDEA)溶液在含氧与除氧条件下以及不同温度下对碳钢的腐蚀行为.结果表明,HSS的存在使碳钢的腐蚀速度加快.常温下HSS中的Cl-对碳钢的腐蚀性最强、可导致碳钢发生孔蚀;溶解氧的存在有利于降低既定HSS的腐蚀性.温度升高,碳钢的全面腐蚀速度增加,宏观孔蚀受到抑制;在含HSS的MDEA溶液中,碳钢腐蚀反应的阴极过程为电化学反应和扩散传质混合控制,阳极过程为电化学反应控制.
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| 关 键 词： | 热稳定性盐 N-甲基二乙醇胺 碳钢 腐蚀 Tafel曲线 电化学阻抗谱 |
CORROSION BEHAVIOR OF CARBON STEEL IN METHYLDIETHANOLAMINE SOLUTION CONTAINING HEAT-STABLE SALTS |
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| WEI Dong-ping,HU Rong-zong,PAN Dan-mei,HUANG Wei-xiong,DONG Rui.CORROSION BEHAVIOR OF CARBON STEEL IN METHYLDIETHANOLAMINE SOLUTION CONTAINING HEAT-STABLE SALTS[J].Corrosion Science and Protection Technology,2008,20(5). |
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| Authors: | WEI Dong-ping HU Rong-zong PAN Dan-mei HUANG Wei-xiong DONG Rui |
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| Affiliation: | WEI Dong-ping1,2,HU Rong-zong1*,PAN Dan-mei1,HUANG Wei-xiong1,DONG Rui11.Department of Chemistry , the Key Laboratory of Analytical Science of the Ministry of Education,College of Chemistry , Chemical Engineering,Xiamen University,Xiamen 361005,2.College of Chemistry , Ecological Engineering,Guangxi University for Nationalities,Nanning 530006 |
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| Abstract: | In the present work,30 mass% methyldiethanolamine(MDEA)solutions containing various simulated heat-stable salts(HSS)were prepared.The corrosion behavior and the relevant corrosion rate-determining factors of carbon steel in the solutions were investigated by anodic polarization curve,Tafel curve and electrochemical impedance spectroscopy.It was showed that the corrosion rate of carbon steel in MDEA solution with HSS was double higher than that without HSS.Carbon steel might suffer from pitting corrosion in ... |
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| Keywords: | heat-stable salts methyldiethanolamine carbon steel corrosion Tafel curve electrochemical impedance spectroscopy |
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