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Citation:
　Ojo Sunday Isaac Fayomi,Malik Abdulwahab,Abimbola Patricia Idowu Popoola,et al.Corrosion Resistance of AA6063-Type Al-Mg-Si Alloy by Silicon Carbide in Sodium Chloride Solution for Marine Application[J].Journal of Marine Science and Application,2015,(4):459-462.[doi:10.1007/s11804-015-1333-7]
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Corrosion Resistance of AA6063-Type Al-Mg-Si Alloy by Silicon Carbide in Sodium Chloride Solution for Marine Application

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Title:
Corrosion Resistance of AA6063-Type Al-Mg-Si Alloy by Silicon Carbide in Sodium Chloride Solution for Marine Application
Author(s):
Ojo Sunday Isaac Fayomi1; 2;  Malik Abdulwahab1; 3;  Abimbola Patricia Idowu Popoola1;  Ferdinand Asuke1; 3
Affilations:
Author(s):
Ojo Sunday Isaac Fayomi1; 2;  Malik Abdulwahab1; 3;  Abimbola Patricia Idowu Popoola1;  Ferdinand Asuke1; 3
1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, X680, Pretoria, South Africa;
2. Department of Mechanical Engineering, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria;
3. Department of Metallurgical and Materials Engineering, Ahmadu Bello University, P.M.B 1045, Zaria, Nigeria
Keywords:
corrosion resistance; silicon carbide; sodium chloride (NaCl); aluminium alloy; interface; inhibition efficiency; thin film; adsorption isotherm; potentiodynamic electrochemical method; marine application
分类号:
-
DOI:
10.1007/s11804-015-1333-7
Abstract:
The present work focused on corrosion inhibition of AA6063 type Al-Mg-Si alloy in sodium chloride (NaCl) solution with a silicon carbide inhibitor, using the potentiodynamic electrochemical method. The aluminium alloy surface morphology was examined, in the as-received and as-corroded in the un-inhibited state, with scanning electron microscopy equipped with energy dispersive spectroscopy (SEM-EDS). The results obtained via linear polarization indicated a high corrosion potential for the unprotected as-received alloy. Equally, inhibition efficiency as high as 98.82% at 10.0 g/v silicon carbide addition was obtained with increased polarization resistance (Rp), while the current density reduced significantly for inhibited samples compared to the un-inhibited aluminium alloy. The adsorption mechanism of the inhibitor aluminium alloy follows the Langmuir adsorption isotherm. This shows that the corrosion rate of aluminium alloy with silicon carbide in NaCl environment decreased significantly with addition of the inhibitor.

References:

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Memo

Memo:
收稿日期:2015-7-12;改回日期:2015-9-28。
基金项目:Supported by the National Research Foundation for the Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria with respect to equipment and funding.
通讯作者:Malik Abdulwahab, E-mail:mabdulwahab@abu.edu.ng
Last Update: 2015-11-07