کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1556150 999174 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of the Protective Surface Films Formed on Molten AZ91D Magnesium Alloy in SO2/Air Atmospheres in a Sealed Furnace
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد شیمی مواد
پیش نمایش صفحه اول مقاله
Characterization of the Protective Surface Films Formed on Molten AZ91D Magnesium Alloy in SO2/Air Atmospheres in a Sealed Furnace
چکیده انگلیسی
Surface films that formed on molten AZ91D magnesium alloy in SO2/air cover gases at 680 °C in a sealed furnace were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and Auger electron spectroscopy. It is revealed that the film formed on molten AZ91D alloy surface in cover gas with high air content can prevent the molten AZ91D alloy from oxidation and ignition. The surface film contained three elements, namely magnesium, oxygen and sulfur, and was mainly composed of MgO and MgS. The properties of the film depended on air content in the cover gas and holding time. Thermodynamic calculation showed that MgSO4 was the stable phase, and it was concluded that the formation of MgSO4 was important for the formation of the protective surface film in SO2/air atmospheres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 30, Issue 4, April 2014, Pages 353-358
نویسندگان
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