New Method of Studying Corrosion Inhibition of Iron with Sodium Silicate
New Method of Studying Corrosion Inhibition of Iron with Sodium Silicate
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研究水玻璃缓蚀铁的新方法
DOI：
10.1149/1.2430183
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发表时间：
1956
影响因子：
3.9
通讯作者：
D. S. Mckinney
中科院分区：
文献类型：
--
作者：
E. Duffek;D. S. Mckinney
提出了一种快速的实验室方法来测试硅酸钠作为阳极抑制剂的有效性。在抛光钢电极上，在硅酸钠（3-500 ppm二氧化硅）的曝气溶液中预处理24小时或更好的48小时，并与相同pH值的氢氧化钠溶液进行比较，得出钝化曲线，表明二氧化硅不仅仅是pH值的增加，还会引起抑制作用。在较短的预处理时间内，用15 ppm及以上的二氧化硅处理的电极没有观察到腐蚀产物，而所有氢氧化钠处理的电极都有腐蚀。该方法可作为实际试验的基础，在实际处理环境中用硅酸钠对电极进行预处理。该方法似乎也适用于其他阳极抑制剂的测试。
A rapid laboratory method is presented for testing the effectiveness of sodium silicate as an anodic inhibitor. Passivity curves taken on polished steel electrodes, pre ‐treated for 24, or better, 48 hr in aerated solutions of sodium silicate (3–500 ppm silica) and compared with sodium hydroxide solutions of the same pH, indicate that silica, and not merely an increase in pH, caused inhibition. No corrosion products were observed in the short pretreatment time for electrodes treated with 15 and more ppm silica, whereas all sodium hydroxide treated electrodes corroded. The method can be made the basis of a practical test by pretreating the electrodes, in the actual environment being treated, with sodium silicate. The procedure also appears to be applicable in the testing of other anodic inhibitors.