Modeling of corrosion inhibition of copper-nickel alloy in hydrochloric acid by benzotriazole

被引：26
作者：
Khadom, A. A. [1 ]
Yaro, A. S. [2 ]
机构：
[1] Univ Daiyla, Dept Mech Engn, Coll Engn, Baquba 32001, Iraq
[2] Univ Baghdad, Dept Chem Engn, Coll Engn, Baghdad 71001, Iraq
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2011年 / 85卷 / 11期
关键词：
activation parameters; corrosion inhibition; copper-nickel alloy; benzotriazole; STEEL; CHLORIDE;
D O I：
10.1134/S0036024411110148
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The corrosion inhibition of copper-nickel alloy by benzotriazole (BTA) in 1.5 M HCl has been investigated by weight loss and polarization techniques at different temperatures. Maximum value of inhibitor efficiency was 99.8% at 35A degrees C and 0.1 M inhibitor concentration, while the lower value was 86.3% at 65A degrees C and 0.02 M inhibitor concentration. The activation energy values were higher in presence of BTA which indicate that in presence of inhibitor, corrosion reaction requires more energy to occur. Two mathematical models were used to represent the weight loss corrosion rate data with high correlation coefficients. Electrochemical polarization measurements showed that BTA is a mixed type inhibitor.
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页码：2005 / 2012
页数：8
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