کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475708 991127 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of AlPO4 addition on the corrosion resistance of andalusite-based low-cement castables with molten Al-alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effects of AlPO4 addition on the corrosion resistance of andalusite-based low-cement castables with molten Al-alloy
چکیده انگلیسی

This paper investigates the effects of AlPO4 addition on the corrosion resistance of andalusite LCC refractories. Corrosion tests using the Alcoa cup test (850 °C and 1160 °C for 150 h and 72 h, respectively) were conducted to determine the extent of penetration. The addition of AlPO4 was shown to improve the corrosion resistance of the castables in contact with molten Al-alloy. SEM/EDS analyses of the interfacial reaction zone showed the formation of corundum in the interfacial layer, along with a significant decrease in the phosphorus content in the interface. Thermodynamic calculations revealed that reaction with the alloy leads to the formation of corundum as the reaction product along with gaseous products (phosphorus trioxide gas) and small amounts of aluminum phosphide. Corundum formation at the interface enhances the corrosion resistance of sample due to high stability of corundum against molten Al alloy, while the metal quality is enhanced due to absence of dissolved phosphorus in the metal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 33, Issue 6, June 2013, Pages 1067–1075
نویسندگان
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