Inhibition of Corrosion of Carbon Steel in Sea Water by Sodium Gluconate - Zn2+ System

被引：7
|
作者：
Rajendran, S. [1 ]
Anuradha, K. [2 ]
Kavipriya, K. [1 ]
Krishnaveni, A. [3 ]
Jeyasundari, J. [4 ]
Sribharathy, V. [1 ]
机构：
[1] GTN Arts Coll, PG & Res Dept Chem, Corros Res Ctr, Dindigul 624005, Tamil Nadu, India
[2] KLN Coll Informat Technol, Dept Chem, Pottapalayam 630611, India
[3] Yadava Coll, Dept Chem, Madurai, Tamil Nadu, India
[4] SVN Coll, Dept Chem, Madurai, Tamil Nadu, India
来源：
PORTUGALIAE ELECTROCHIMICA ACTA | 2013年 / 31卷 / 03期
关键词：
Carbon steel; sodium gluconate; synergistic effect; Atomic Force Microscopy (AFM); Fourier Transform Infrared Spectroscopy (FTIR); corrosion;
D O I：
10.4152/pea.201303141
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The inhibition efficiency of sodium gluconate (SG)-Zn2+ system in controlling corrosion of carbon steel in sea water has been evaluated by weight-loss method. The formulation consisting of 250 ppm of SG and 75 ppm of Zn2+ has 98% IE. Influence of duration of immersion on the IE of SG-Zn2+ has been evaluated. The mechanistic aspects of corrosion inhibition have been investigated by polarization study and AC impedance spectra. The protective film has been analysed by FTIR and luminescence spectra. The surface morphology and the roughness of the metal surface have been analysed by atomic force microscopy. The protective film consists of Fe2+ - SG complex and Zn(OH)(2). It is found to be UV - fluorescent.
引用
收藏
页码：141 / 155
页数：15
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