کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1472162 990372 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation and breakdown of surface films on magnesium and its alloys in aqueous solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Formation and breakdown of surface films on magnesium and its alloys in aqueous solutions
چکیده انگلیسی

The influences of surface films formed by open-circuit exposure to neutral solutions on the corrosion and electrochemical behaviour of pure Mg and Mg alloys have been examined by in situ ellipsometric analysis and electrochemical measurements. Surface films mainly composed of Mg(OH)2 grew rapidly during open-circuit exposure to 0.1 M NaCl and 0.1 M Na2SO4 solutions. These films had protective ability to passivate Mg in the solutions. However, they suffered local breakdown under anodic polarisation. The passive current density decreased and the breakdown potential increased with increasing immersion time and film thickness. Influences of purity and alloying elements on the passivity and its breakdown of Mg have been discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 49, Issue 1, January 2007, Pages 166–175
نویسندگان
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