کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
829906 1470347 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation on the corrosion behavior of aluminum alloys 3A21 and 7A09 in chloride aqueous solution
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Investigation on the corrosion behavior of aluminum alloys 3A21 and 7A09 in chloride aqueous solution
چکیده انگلیسی


• 3A21 alloy had good corrosion resistance due to its uniform and fine microstructure.
• The serious pitting corrosion of 7A09 was owing to its microstructural heterogeneity.
• The anodic activity of the intermetallics of 7A09 ceased after immersion for 4 days.The corrosion products were mainly composed of Al2O3, Al(OH)3 and AlCl3.

The corrosion behavior of aluminum alloys 3A21 and 7A09 in 3.5%NaCl solution were studied by using microstructure examination, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform-infrared (FT-IR) spectroscopy. Results show that the two kinds of alloys both suffer from pitting corrosion and the corrosion of 7A09 is much more serious than that of 3A21. The EIS tests reveal high corrosion rate for 7A09 alloy and good corrosion resistance for 3A21 alloy. XPS and FT-IR analysis demonstrate that the corrosion products are mainly composed of Al2O3, Al(OH)3 and AlCl3.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 50, September 2013, Pages 15–21
نویسندگان
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