کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
694069 889920 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of chromated and organic layers on corrosion resistance of galvanized steel sheets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
The effect of chromated and organic layers on corrosion resistance of galvanized steel sheets
چکیده انگلیسی

Chromated zinc steel sheets have been used widely for corrosion resistance performance in various waters. The coating system includes a chromated layer and both a primer and topcoat, a commonly applied system for better corrosion performance. Electrochemical impedance spectroscopy results show that the corrosion resistance of chromated zinc is due to its passivity after water uptake during the exposure. In galvanized steel sheets with a primer, the electrolyte solution can only reach the metallic substrate through the coating pores; thus, a double layer could build up locally at the bottom of the pores, resulting in a good corrosion resistance for the sheet. On the other hand, the high-pore-resistance system of primer and topcoat provides no evidence of corrosion even after 8 weeks’ exposure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 62, Issue 1, March 2008, Pages 61–64
نویسندگان
, ,