کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10626293 989649 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and phase evolution of alumina-spinel self-flowing refractory castables containing nano-alumina particles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Microstructure and phase evolution of alumina-spinel self-flowing refractory castables containing nano-alumina particles
چکیده انگلیسی
The microstructure and phase composition of alumina-spinel self-flowing refractory castables added with nano-alumina particles at different temperatures are investigated. The physical and mechanical properties of these refractory castables are studied. The results show that the addition of nano-alumina has a great effect on the physical and mechanical properties of these refractory castables. With the increase of nano-alumina content in the castable composition, the mechanical strength is considerably increased at various temperatures. It is shown that nano-alumina particles can affect formed phases after firing. The platy crystals of CA6 are detected inside the grain boundaries of tabular alumina and spinel grains in samples fired at 1500 °C. CA6 phase can be formed at lower temperatures (1300 °C) with the addition of nano-alumina particles. As a result of using nanometer-sized alumina particles with high surface area, the solid phase sintering of the nano-sized particles and CA6 formation can occur at lower temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 3, April 2011, Pages 1003-1009
نویسندگان
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