Corrosion inhibition of mild steel using naphthalene disulfonic acid

被引：30

作者：

Bayoumi, FM ^{[1
]}

Ghanem, WA ^{[1
]}

机构：

[1] Cent Met Res & Dev Inst, Cairo, Egypt

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 29-30期

关键词：

steel; sulphuric acid; NDSA; corrosion inhibitors;

D O I：

10.1016/j.matlet.2005.06.070

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion inhibition of mild steel is the subject of tremendous technological importance due to the increased industrial applications of this material. This paper reports the results of mass loss and potentiodynamic polarization measurements on the corrosion inhibition of mild steel in 0.5 M H2SO4 in the temperature range 30-60 degrees C using sodium naphthalene disulphonic acid (NDSA) as an inhibitor. The inhibition efficiency increased with the increase in concentration of NDSA till a critical value which is independent on temperature. The adsorption of inhibitor at 30 degrees C followed Flory-Huggins adsorption isotherm and the value of standard free energy of adsorption suggests that it is chemisorption. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：3806 / 3809

页数：4

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