Chemical Degradation of Epoxy-Polyamide Primer by Electrochemical Impedance Spectroscopy
المؤلفون المشاركون
Pownsamy, Kannan
Duraisamy, Ramesh
Asgedom, Ghebray
المصدر
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-07-09
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
The degradation of organic-inorganic hybrid materials based on epoxy resin was characterized electrochemically in aggressive chemical electrolyte.
In the present study, the hybrid material as primer was prepared from epoxy resin pigmented by zinc phosphate cured with polyamide (EPZ).
The hybrid material was coated on mild steel substrate, and the corrosion behavior was studied by electrode-potential time measurements and mainly by electrochemical impedance spectroscopy (EIS) in 5% NaCl solution.
The impedance parameters, namely, coating capacitance (Cc), pore resistance (Rpo), charge transfer resistance (Rt), double layer capacitance (Cd1), and break point frequency (fb), corresponding to 45° phase angle as a function of time of exposure were estimated.
The observed impedance behavior were compared with the established equivalent electrical circuit represents the coated metal/electrolyte interface.
Changes in the values of the circuit components given the information on the stages of degradation and physical phenomenon occurring throughout the degradation of primer coating were also been predicted.
In addition, information related to the porous nature of the primer, limited passivation effect, and delamination of coating with longer exposure that resulted in the diffusion controlled corrosion of metal are also recognized.
Thus, results indicate that the EPZ coating had good corrosion resistance.
This could be a nonpolluting alternative to the traditional chromate like environmentally harmful coatings.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Duraisamy, Ramesh& Pownsamy, Kannan& Asgedom, Ghebray. 2012. Chemical Degradation of Epoxy-Polyamide Primer by Electrochemical Impedance Spectroscopy. ISRN Corrosion،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-500699
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Duraisamy, Ramesh…[et al.]. Chemical Degradation of Epoxy-Polyamide Primer by Electrochemical Impedance Spectroscopy. ISRN Corrosion No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-500699
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Duraisamy, Ramesh& Pownsamy, Kannan& Asgedom, Ghebray. Chemical Degradation of Epoxy-Polyamide Primer by Electrochemical Impedance Spectroscopy. ISRN Corrosion. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-500699
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-500699
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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