Synergistic Effect on Corrosion Inhibition by Cerium(IV) Ion and Sodium Molybdate for Cold Rolled Steel in Hydrochloric Acid Solution

Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (24): 2386-2390. Previous Articles Next Articles

稀土铈(IV)离子和钼酸钠在盐酸溶液中对冷轧钢的缓蚀协同效应

木冠南, 李向红, 屈庆, 周俊

云南大学化学系, 昆明, 650091

投稿日期:2004-04-15 修回日期:2004-08-02 发布日期:2014-02-17
通讯作者: 木冠南,E-mail:guannan@public.km.yn.cn E-mail:guannan@public.km.yn.cn
基金资助:
国家自然科学基金(No.50261004)资助项目.

Synergistic Effect on Corrosion Inhibition by Cerium(IV) Ion and Sodium Molybdate for Cold Rolled Steel in Hydrochloric Acid Solution

MU Guan-Nan, LI Xiang-Hong, QU Qing, ZHOU Jun

Department of Chemistry, Yunnan University, Kunming 650091

Received:2004-04-15 Revised:2004-08-02 Published:2014-02-17

Abstract

The synergistic effect on inhibition by cerium(IV) ion and sodium molybdate for cold rolled steel (CRS) in hydrochloric acid solution was investigated by weight-loss and electrochemistry methods. The results showed that both sodium molybdate and cerium(IV) had inhibitive effect on CRS corrosion, but the maximum inhibition efficiencies were not more than 42%. From the discussion of adsorption model, the experimental results were discussed more reasonably in the light of amended formula, which was amended based on Langmuir adsorption isothermal equation. Three adsorption parameters were also calculated. Through the experiments of comparison, it was found that cerium(IV) ion with sodium molybdate produced strong synergistic effect on corrosion inhibition for CRS, and the maximum inhibition efficiency was about 90%.

Key words: hydrochloric acid, cold rolled steel, sodium molybdate, Ce⁴⁺, sodium sulfate, synergism

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MU Guan-Nan, LI Xiang-Hong, QU Qing, ZHOU Jun. Synergistic Effect on Corrosion Inhibition by Cerium(IV) Ion and Sodium Molybdate for Cold Rolled Steel in Hydrochloric Acid Solution[J]. Acta Chimica Sinica, 2004, 62(24): 2386-2390.

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稀土铈(IV)离子和钼酸钠在盐酸溶液中对冷轧钢的缓蚀协同效应

Synergistic Effect on Corrosion Inhibition by Cerium(IV) Ion and Sodium Molybdate for Cold Rolled Steel in Hydrochloric Acid Solution

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