Corrosion inhibition of mild steel in hydrochloric acid solution by methylene blue dye

被引：98
|
作者：
Oguzie, EE [1 ]
机构：
[1] Fed Univ Technol Owerri, Electrochem & Mat Sci Res Lab, Dept Chem, Owerri, Nigeria
来源：
MATERIALS LETTERS | 2005年 / 59卷 / 8-9期
关键词：
mild steel; methylene blue; corrosion; inhibition; metal surface; adsorption;
D O I：
10.1016/j.matlet.2004.12.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion inhibition of mild steel in hydrochloric acid solution by methylene blue dye (MB) was investigated by gravimetric techniques at 30 and 60 degreesC as well as thermometric technique. MB was shown to be an inhibitor in the acidic corrodent. Inhibition efficiency increased with MB concentration but decreased with rise in temperature, with maximum value of 94-95% obtained for 5.0 mM MB at 30 degreesC. Corrosion inhibition is attributed to the adsorption of MB on the mild steel surface via a physical adsorption mechanism. These results were further corroborated by kinetic and activation parameters for corrosion and adsorption processes evaluated from experimental data. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：1076 / 1079
页数：4
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