| 天然海水中硫酸锌、葡萄糖酸钙和APG等复合碳钢缓蚀剂的研究 |
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| 引用本文： | 穆振军,杜敏.天然海水中硫酸锌、葡萄糖酸钙和APG等复合碳钢缓蚀剂的研究[J].中国海洋大学学报(自然科学版),2004,34(2):238-244. |
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| 作者姓名： | 穆振军 杜敏 |
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| 作者单位： | 中国海洋大学化学化工学院,山东,青岛,266003 |
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| 基金项目： | 山东省教育厅第三批科技计划项目 (J0 2 C5 2 )资助 |
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| 摘 要： | 通过正交实验确定了硫酸锌、葡萄糖酸钙和 APG(C0 81 0 )复配的 3元缓蚀剂最佳复配比为4∶ 1∶ 2。用失重法测得该 3元缓蚀剂在 35 0 mg/ L时对碳钢缓蚀率为 92 .8%,但试样表面存在局部腐蚀。为了抑制试样局部腐蚀的发生 ,采用失重法从几种常用缓蚀组分中筛选出硅酸钠和钨酸钠作为 3元缓蚀剂的添加剂组成 5元缓蚀剂 ,通过正交实验确定了组分间的最佳复配比。用失重法确定了5元缓蚀剂的临界浓度为 2 80 mg/ L ,此时对碳钢缓蚀率为 93.8%,并有效抑制了局部腐蚀的发生。从而得到了天然海水中 1种有效抑制碳钢局部腐蚀的低毒、高效复合缓蚀剂。据极化曲线分析可以确定该 5元缓蚀剂是 1种抑制阳极过程为主的混合型缓蚀剂。
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| 关 键 词： | 缓蚀剂 天然海水 碳钢 局部腐蚀 |
| 文章编号： | 1672-1574(2004)02-238-07 |
| 修稿时间： | 2003年8月22日 |
A Study of Compound Inhibitors Composed of ZnSO4,CaGl and APG for Mild Steel in Natural Seawater |
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| MU Zhen-jun,DU Min.A Study of Compound Inhibitors Composed of ZnSO4,CaGl and APG for Mild Steel in Natural Seawater[J].Periodical of Ocean University of China,2004,34(2):238-244. |
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| Authors: | MU Zhen-jun DU Min |
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| Abstract: | The best weight ratio of calcium gluconate, ZnSO 4 and APG was studied by Latin experiment. Local corrosion was found on mild steel after this three-compound corrosion inhibitor was added. In order to prevent local corrosion Na 2SiO 3 and Na 2WO 4 were added to form a five-compound corrosion inhibitor. The best weight ratio of calcium gluconate,ZnSO 4,APG,Na 2SiO 3 and Na 2WO 4 was studied by Latin experiment too. The critical concentration of the five-compound corrosion inhibitor was studied by weight loss. The inhibitor can inhibit local corrosion well at the critical concentration. In this way, a kind of high effect corrosion inhibitor was obtained. |
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| Keywords: | corrosion inhibitor natural seawater mild steel local corrosion |
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