| NO_2~-和Cl~-对模拟混凝土孔隙液中钢筋腐蚀行为的影响 |
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| 引用本文： | 乔冰,杜荣归,陈雯,朱燕峰,林昌健.NO_2~-和Cl~-对模拟混凝土孔隙液中钢筋腐蚀行为的影响[J].金属学报,2010(2). |
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| 作者姓名： | 乔冰 杜荣归 陈雯 朱燕峰 林昌健 |
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| 作者单位： | 厦门大学化学化工学院固体表面物理化学国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目20473066;;国家自然科学基金重点项目50731004;;国家科技支撑计划项目2007BAB27B04资助~~ |
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| 摘 要： | 应用极化曲线法和电化学阻抗技术研究了NO_2~-和Cl~-对钢筋在不同pH值的模拟混凝土孔隙液中的腐蚀行为,结果表明,钢筋耐蚀性与溶液的pH值,以及NO_2~-和Cl~-的浓度相关,pH值的降低和Cl~-浓度的增高都会使钢筋的耐蚀性降低。在含Cl~-的模拟液中,随着NO_2~-浓度升高,钢筋腐蚀速率降低,在pH值为12.50和10.50的溶液中,当NO_2~-]/Cl~-]≥0.4时,NO_2~-对钢筋具有良好的阻锈作用。
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| 关 键 词： | 钢筋 模拟混凝土孔隙液 Cl~- 亚硝酸盐 |
EFFECT OF NO_2 AND Cl~- ON THE CORROSION BEHAVIOR OF REINFORCING STEEL IN SIMULATED CONCRETE PORE SOLUTIONS |
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| QIAO Bing,DU Ronggui,CHEN Wen,ZHU Yanfeng,LIN Changjian State Key Laboratory for Physical Chemistry of Solid Surfaces.EFFECT OF NO_2 AND Cl~- ON THE CORROSION BEHAVIOR OF REINFORCING STEEL IN SIMULATED CONCRETE PORE SOLUTIONS[J].Acta Metallurgica Sinica,2010(2). |
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| Authors: | QIAO Bing DU Ronggui CHEN Wen ZHU Yanfeng LIN Changjian State Key Laboratory for Physical Chemistry of Solid Surfaces |
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| Affiliation: | QIAO Bing,DU Ronggui,CHEN Wen,ZHU Yanfeng,LIN Changjian State Key Laboratory for Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry , Chemical Engineering,Xiamen University,Xiamen 361005 |
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| Abstract: | Under normal conditions,reinforcing steel in concrete maintains its passivity because of the high alkalinity of the concrete pore solution.However,steel passivity may be broken and the steel corrosion takes place due to concrete carbonation and/or chloride ingress.In fact,premature failure of reinforced concrete structures due to the steel corrosion has been a major problem in civil engineering.Therefore,the study of corrosion and protection of reinforcing steel is of indispensable importance to prolonging ... |
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| Keywords: | reinforcing steel simulated concrete pore solution Cl~- nitrite |
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