Corrosion Inhibition Efficiency of 3-Hydroxy-2-Methylquinazoline-4-one on Mild Steel in 1 M H2SO4 and 1 M HCl Acid at Different Temperatures

被引：0
作者：
Siddiqi, W. A. [1 ]
Chaubey, V. M. [1 ]
机构：
[1] Jamia Millia Islamia, Environm Sci Lab, Dept Appl Sci & Humanities, Fac Engn & Technol, New Delhi 110025, India
来源：
PORTUGALIAE ELECTROCHIMICA ACTA | 2008年 / 26卷 / 02期
关键词：
corrosion; inhibition; 3-hydroxy-2-methylquinazoline; -4-one; hydrochloric acid; sulfuric acid;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of 3-hydroxy-2-methylquinazoline -4-one on the corrosion inhibition of mild steel in 1 M HCl and 1 M H2SO4 has been studied using weight loss, and galvanostatic polarization studies. Result obtained reveals that this organic compound is a very good inhibitor and its inhibition efficiency increases with increasing its concentration to attain 92% at 1000 ppm at 25 degrees C. The potentiodynamic polarization study indicates that this compound acts as a mixed type corrosion inhibitor. The rate of corrosion of mild steel rapidly increases with temperature over the temperature range of 25 degrees C to 55 degrees C, both in absence and presence of the inhibitor. Thermodynamic parameter for adsorption process has been calculated using the Langmuir's adsorption isotherm.
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页码：221 / 233
页数：13
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