| 海水中钨酸盐复合缓蚀剂对碳钢的缓蚀性能 |
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| 引用本文： | 柳鑫华,王红,孙彩云.海水中钨酸盐复合缓蚀剂对碳钢的缓蚀性能[J].材料保护,2009,42(8). |
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| 作者姓名： | 柳鑫华 王红 孙彩云 |
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| 作者单位： | 河北理工大学化工与生物技术学院,河北,唐山,063009 |
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| 基金项目： | 河北省科技局科技攻关项目 |
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| 摘 要： | 将海水用于工业可大量节省淡水资源,但海水会对金属设备产生严重腐蚀.采用失重法、极化曲线和表面分析技术就海水中钨酸盐复合缓蚀剂对碳钢(A3)的缓蚀性能及缓蚀机理进行了研究,确定了与钨酸盐具有较好协同效应的缓蚀剂配方.结果表明:单一的钨酸盐对海水中碳钢的缓蚀率随其浓度的增加而增加,浓度低缓蚀率低,40 mg/L以下会加速碳钢腐蚀;四元复合缓蚀剂中钨酸盐、柠檬酸、HEDP和锌盐浓度分别为30,40,10,3 mg/L时,对A3钢的缓蚀率超过93%;单一钨酸盐及其复合缓蚀剂均为阳极型缓蚀剂;添加缓蚀剂后A3钢表面以氧化铁为主要成分,钨与磷也参与了不溶性沉淀膜的形成,有效地抑制了海水对碳钢的腐蚀.
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| 关 键 词： | 复合缓蚀剂 钨酸盐 碳钢 海水 缓蚀性能 缓蚀机理 |
Inhibition Behavior and Mechanism of Tungstate Compound Inhibitor for Carbon Steel in Seawater |
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| LIU Xin-hua,WANG Hong,SUN Cai-yun.Inhibition Behavior and Mechanism of Tungstate Compound Inhibitor for Carbon Steel in Seawater[J].Journal of Materials Protection,2009,42(8). |
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| Authors: | LIU Xin-hua WANG Hong SUN Cai-yun |
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| Affiliation: | LIU Xin-hua,WANG Hong,SUM Cai-yun ( School of Chemical Engineering , Biotechnology,Hebei Polytechnic University,Tangshan 063009,China) |
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| Abstract: | The corrosion inhibition performance and mechanism of atungstate-based composite inhibitor for carbon steel in seawater were investigated by using weight loss test, polarization curve meas-urement , and analysis of scanning electron microscopy and energy dispersive spectrometry. Results indicate that the inhibition effi-ciency increase with increasing concentration of single tungstate, but single tungstate inhibitor has low inhibition efficiency. Contraryto the above, an inhibitor formulated from tungstate,... |
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| Keywords: | composite inhibitor tungstate carbon steel seawater inhibition performance corrosion inhibition mechanism |
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