کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1491653 992356 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of nanocrystalline magnesium aluminate (MgAl2O4) spinel powder by the urea–formaldehyde polymer gel combustion route
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis of nanocrystalline magnesium aluminate (MgAl2O4) spinel powder by the urea–formaldehyde polymer gel combustion route
چکیده انگلیسی

Nanocrystalline MgAl2O4 spinel powder was synthesized by the urea–formaldehyde (UF) polymer gel combustion route. A transparent gel formed from magnesium nitrate, aluminium nitrate and UF after drying underwet self-sustained combustion when initiated with a burning splinter. The combustion product on calcinations at 850 °C formed MgAl2O4 spinel. Calcination of the combustion product resulted in particle coarsening. The powder obtained by planetary ball milling of the spinel had a median particle size of 1.58 μm. The spinel particles are agglomerates of nanocrystallites of size in the range 10–30 nm. The compacts prepared by uni-axial pressing of the spinel powder sintered to >99% TD at 1600 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 3, 5 March 2009, Pages 613–618
نویسندگان
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