Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid
Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid
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DOI：
10.1007/s11743-011-1252-9
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发表时间：
2011-10-01
影响因子：
1.6
通讯作者：
Holmberg, Krister
中科院分区：
文献类型：
--
作者：
Mahdavian, Mohammad;Tehrani-Bagha, Ali Reza;Holmberg, Krister
比较了阳离子双子表面活性剂N，N '-双十二烷基-N，N，N'，N '-四甲基-1，4-丁烷二溴化铵（12-4-12）和相应的单体表面活性剂十二烷基三甲基溴化铵在1 M盐酸溶液中的缓蚀效率。极化曲线和电化学阻抗谱被用来评价缓蚀作用。12-4-12表面活性剂在很低的浓度下就表现出极高的缓蚀效率。在强酸性条件下进行的表面张力测量表明，双子表面活性剂是显着的耐电解质，这是在钢铁表面的吸附是有益的。
A cationic gemini surfactant, N,N'-didodecyl-N,N,N',N'-tetramethyl-1,4-butanediammonium dibromide (12-4-12) and the corresponding monomeric surfactant dodecyltrimethylammonium bromide were compared with respect to corrosion inhibition efficiency in 1 M hydrochloric acid solution. Polarization and electrochemical impedance spectroscopy were used to evaluate corrosion inhibition. The 12-4-12 surfactant showed an extremely high corrosion inhibition efficiency at very low concentration. Surface tension measurements performed under the strongly acidic conditions revealed that the gemini surfactant is remarkably electrolyte tolerant, which is beneficial for adsorption at the steel surface.