| 缓蚀剂对钢筋在模拟混凝土孔溶液及砂浆中的作用机理——交流阻抗法 |
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| 引用本文： | 汪鹰,何平,史苑芗,魏宝明.缓蚀剂对钢筋在模拟混凝土孔溶液及砂浆中的作用机理——交流阻抗法[J].陶瓷科学与艺术,1998(2). |
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| 作者姓名： | 汪鹰 何平 史苑芗 魏宝明 |
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| 作者单位： | 南京化工大学应用化学系 |
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| 摘 要： | 采用交流阻抗法研究了复合缓蚀剂中各组分的缓蚀机理，结果表明亚硝酸盐是阳极型钝化膜型缓蚀剂；硅酸盐是混合型沉淀膜型缓蚀剂；有机铵盐则是吸附膜型缓蚀剂，三组分复合后有增效作用。钢筋／砂浆的交流阻抗结果还表明，三元复合缓蚀剂的加入能改善水泥砂浆的微观结构，降低其孔隙率。
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| 关 键 词： | 交流阻抗 复合缓蚀剂 缓蚀机理 砂浆 孔隙率 |
THE CORROSION INHIBITION EFFECT AND MECHANISM OF INHIBIFTORS FOR REBAR STUDIED BY A. C. IMPEDANCE |
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| Wang Ying\ He Ping\ Shi Yuanxiang\ Wei Baoming.THE CORROSION INHIBITION EFFECT AND MECHANISM OF INHIBIFTORS FOR REBAR STUDIED BY A. C. IMPEDANCE[J].Ceramics Science & Art,1998(2). |
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| Authors: | Wang Ying\ He Ping\ Shi Yuanxiang\ Wei Baoming |
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| Affiliation: | Wang Ying\ He Ping\ Shi Yuanxiang\ Wei Baoming Department of Applied Chemistry,Nanjing University of Chemical Technology,Nanjing,210009,China |
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| Abstract: | A. C. impendace technique was used to investigate the corrosion inhibition and mechanism of inhibitors for rebar in simulated pole solution and mortar. The results show that among the composite inhibitors, NaNO 2 is an anodic inhibitor; silicate only deposits on the surface of the rebar passive film; organic ammonium improves the passive film by competing with Cl -. When added in certain ratio, their combined effect is found to be very effective. A.C. impedance also shows that the pore rate of mortar is reduced by adding composite inhibitors. |
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| Keywords: | A C impedance\ composite inhibitors\ inhibition mechanism\ mortar\ pore rate |
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