| 单氟磷酸钠在混凝土模拟孔隙液中的缓蚀特性 |
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| 引用本文： | 张大全,张万友,王嵬,周国定. 单氟磷酸钠在混凝土模拟孔隙液中的缓蚀特性[J]. 腐蚀与防护, 2007, 28(2): 55-57 |
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| 作者姓名： | 张大全 张万友 王嵬 周国定 |
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| 作者单位： | 上海电力学院环境工程系,上海,200090;东北电力大学化工学院,吉林,132012;上海电力学院环境工程系,上海,200090;东北电力大学化工学院,吉林,132012 |
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| 基金项目： | 上海市重点(培育)学科项目 |
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| 摘 要： | 采用动电位极化曲线和电化学阻抗谱研究了Na2PO3F在模拟混凝土孔隙液中对钢筋的保护作用。Na2PO3F的加入导致混凝土钢筋的腐蚀电位负移,对钢筋的阴极和阳极电化学过程均有抑制作用,是一种混合型缓蚀剂。Na2PO3F能够在钢筋表面形成沉淀型保护膜,阻挡侵蚀性离子对钢筋的侵蚀。
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| 关 键 词： | Na2PO3F 钢筋混凝土 腐蚀 极化曲线 电化学阻抗谱 |
| 文章编号： | 1005-748X（2007）02-0055-03 |
| 收稿时间： | 2006-03-15 |
| 修稿时间： | 2006-04-20 |
INHIBITION EFFECT OF Na2PO3F ON CORROSION OF REINFORCING STEEL IN SIMULATED CONCRETE PORE SOLUTION |
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| ZHANG Da-quan,ZHANG Wan-you,WANG Wei,ZHOU Guo-ding. INHIBITION EFFECT OF Na2PO3F ON CORROSION OF REINFORCING STEEL IN SIMULATED CONCRETE PORE SOLUTION[J]. Corrosion & Protection, 2007, 28(2): 55-57 |
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| Authors: | ZHANG Da-quan ZHANG Wan-you WANG Wei ZHOU Guo-ding |
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| Affiliation: | 1. Department of Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China; 2. Department of Applied Chemistry, Northeast China University of Electric Power Engineering, Jilin 132012, China |
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| Abstract: | The inhibition effect of Na2PO3F on reinforcing steel corrosion was investigated by electrochemical polarization curves and electrochemical impedance spectroscopy in simulated pore solution.The cathodic reaction of steel electrode was suppressed and passive region current density of anodic process was depressed.It acted as a mixing type inhibitor in concrete.The electrochemical reaction can be suppressed by forming a desposition film in the steel/concrete interface,which retards the attack by aggressive Cl-. |
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| Keywords: | Na2PO3F Reinforced concrete Corrosion Polarization curve Electrochemical impedance spectroscopy |
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