Sodium gluconate as corrosion and scale inhibitor of ordinary steel in simulated cooling water

被引：129
|
作者：
Touir, R. [1 ]
Cenoui, M. [1 ]
El Bakri, M. [1 ]
Touhami, M. Ebn [1 ]
机构：
[1] Fac Sci, Electrochem Corros & Environm Lab, Kenitra, Morocco
来源：
CORROSION SCIENCE | 2008年 / 50卷 / 06期
关键词：
corrosion and scale; polarisation curves; EIS; ordinary steel; simulated cooling water;
D O I：
10.1016/j.corsci.2008.02.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of sodium gluconate anion (SG) on the corrosion and scale inhibition of ordinary steel in simulated cooling water has been studied using weight loss, polarisation curves, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) techniques. SG was studied in concentration from 10(-4) M to 10(-1) M. Results obtained reveal that SG perform excellently as corrosion and scaling inhibitor for ordinary steel in simulated cooling water. An increase of SG concentration leads to the increase of the corrosion potential towards the positive direction. The inhibition efficiency was a low temperature dependence. The inhibitor mechanism was treated as an adsorption process according to Langmuir adsorption isotherm. The SEM/EDAX data show that was a corrosion and scale inhibitor. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1530 / 1537
页数：8
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