کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1662409 1517698 2007 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics, mechanism and characterisation of passive film formed on hot dip galvanized coating exposed in simulated concrete pore solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Kinetics, mechanism and characterisation of passive film formed on hot dip galvanized coating exposed in simulated concrete pore solution
چکیده انگلیسی

It is established that hot dip galvanized (HDG) coatings exposed in simulated concrete pore solution (SPS) develops very stable corrosion products at the coating surface and its corrosion potential gets greatly ennobled due to the formation of a passive layer. This passive layer has been identified as hydrozincite Zn5(CO3)2(OH)6. The passive film is formed in all the constituents of SPS namely hydroxides of sodium, potassium and calcium. Electrochemical impedance spectroscopy (EIS), Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDXA), XRD studies etc. have been performed to study the kinetics and understand the mechanism of formation of hydrozincite (HZ) at the corroding interface. These studies are expected to provide technique for development of an eco-friendly protective passive layer on galvanized coatings prior to their embedding in concrete.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 201, Issues 16–17, 21 May 2007, Pages 7346–7359
نویسندگان
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