| Q235钢在模拟海水环境混凝土孔隙液中阴极氧还原反应的动力学研究 |
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| 引用本文： | 李永娟,张盾,刘学庆. Q235钢在模拟海水环境混凝土孔隙液中阴极氧还原反应的动力学研究[J]. 腐蚀科学与防护技术, 2009, 21(2): 134-136 |
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| 作者姓名： | 李永娟 张盾 刘学庆 |
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| 作者单位： | 中国科学院海洋研究所,青岛,266071;中国科学院研究生院,北京,100049;中国科学院海洋研究所,青岛,266071 |
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| 基金项目： | 国家支撑计划项目，中国科学院创新工程重要方向项目 |
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| 摘 要： | 通过用循环伏安和旋转圆盘电极伏安等电化学方法研究了Q235钢在模拟海水环境下的混凝土孔隙液中阴极氧还原反应行为及动力学参数.结果表明：在0.02 mol/L Ca(OH)2溶液中氧还原反应在阴极反应电位范围内，最初为混合过程控制的二电子反应即O2还原为HO-2，电位较负时为扩散过程控制的四电子反应，反应的最终产物为OH-.0.02 mol/L Ca(OH)2+3.5% NaCl溶液中氧还原反应半波电位与无氯离子溶液体系相比发生正移，氧还原反应以四电子反应为主，反应的最终产物为OH-.
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| 关 键 词： | Q235钢 氧还原反应 循环伏安法 旋转圆盘电极 碱性溶液 |
| 收稿时间： | 2008-09-01 |
KINETICS OF CATHODIC OXYGEN REDUCTION REACTION ON Q235 STEEL IN A SIMULATED CONCRETE PORE SOLUTION IN SEAWATER ENVIRONMENT |
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| LI Yong-juan,ZHANG Dun,LIU Xue-qing. KINETICS OF CATHODIC OXYGEN REDUCTION REACTION ON Q235 STEEL IN A SIMULATED CONCRETE PORE SOLUTION IN SEAWATER ENVIRONMENT[J]. Corrosion Science and Protection Technology, 2009, 21(2): 134-136 |
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| Authors: | LI Yong-juan ZHANG Dun LIU Xue-qing |
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| Affiliation: | LI Yong-juan1,2,ZHANG Dun1,LIU Xue-qing11.Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,2.Graduate School,Beijing 100049 |
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| Abstract: | Cyclic voltammetry and rotating disk electrode voltammetry were used to study the kinetics process of cathodic oxygen reduction reaction(ORR)on Q235 steel in an artificial solution simulated concrete pore liquor in seawater environment.The results show that the ORR in 0.02 mol/L Ca(OH)2 solution was a two-electron reaction companying with that O2 reduced to HO-2,which was controlled by a mixed process of charge transfer and mass transport,at the potentials of the beginning of ORR.Thereafter it was a four-el... |
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| Keywords: | Q235 steel oxygen reduction reaction cyclic voltammetry rotating disk electrode alkaline solution |
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