کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6616024 | 459630 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deposition, characterization and electrochemical properties of silica-phosphate composite coatings formed over A6092/SiC/17.5p aluminum metal matrix composite
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This paper investigates the effect of 2.5Â wt.% (NH4)3PO4 post-treatment after silica treatment on the formation of silica-phosphate (Si-P) composite coatings over A6092/SiC/17.5p aluminum metal matrix composite (AMMC). In previous studies, the optimum concentration, treatment time and pH of silica treatment have been determined. The aim of the current paper is to determine the optimum conditions under which Si-P composite coatings can provide a maximum localized corrosion protection to AMMC. The surface morphology of Si-P composite coatings and the ability to protect AMMC substrate from localized corrosion in Clâ media were examined as a function of phosphate treatment time (0, 2, 5 and 10Â min). Results showed that phosphate post-treatment after silica coating significantly affects the microstructure and the pitting corrosion resistance of the ultimate coated composites. The coating deposited on AMMC post-treated for 2Â min provides better pitting corrosion resistance than that post-treated for 5 and 10Â min. It is largely because the morphologies of the coatings are remarkably different under the three post-treatment conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 109, 30 October 2013, Pages 168-172
Journal: Electrochimica Acta - Volume 109, 30 October 2013, Pages 168-172
نویسندگان
Abdel Salam Hamdy, F. Alfosail, Z. Gasem,