کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
7888821 1509796 2018 7 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Theoretical analysis and synthesis of Al4O4C and Al2CO phase in the resin bonded Al-Al2O3 refractory in N2-flowing
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Theoretical analysis and synthesis of Al4O4C and Al2CO phase in the resin bonded Al-Al2O3 refractory in N2-flowing
چکیده انگلیسی
In flowing nitrogen, Al4O4C and Al2CO bonded Al2O3-based composite was successfully prepared by a gaseous phase mass transfer pathway at 1600 °C for 3 h after an Al-AlN core-shell structure was formed in the resin bonded Al-Al2O3 refractory at 580 °C for 8 h. The formation mechanism of Al4O4C and Al2CO phase is as follows. An Al-AlN core-shell structure is built at 580 °C for 8 h and broken at higher temperatures, and then, Al(g) reacts with C from the resin and N2 to form Al4C3 and AlN, respectively. Owing to the exothermic reaction of the Al4C3 and AlN formation, the reaction temperature in the resin bonded Al-Al2O3 refractory is above the practical environmental temperature; for instance, the reaction temperature is above 1715 °C at 1600 °C in this work. Therefore, Al4C3 reacts with Al2O3 to generate Al4O4C and then Al4O4C is transformed into Al2OC by the reaction Al4O4C(s)+Al4C3(s)→4Al2OC(s) at elevated temperatures. Al2OC solid solution is finally formed through the dissolution of AlN into Al2OC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 2, 1 February 2018, Pages 1493-1499
نویسندگان
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