کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1477756 | 991198 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of magnesium aluminate spinel formation from carbonate precursors
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of the presented work was to study formation of magnesium aluminate spinel precursor powder during the co-precipitation of magnesium and aluminium nitrate with ammonium carbonate and its thermal transformation to spinel powder. After precipitation, the only crystalline phase is NH4Al(OH)2CO3·H2O (ammonium dawsonite). The second one, Mg6Al2(CO3)(OH)16·4H2O (hydrotalcite) appears during ageing. As found by DTA-MS and HT-XRD measurements, co-existence of both phases in very close contact results in their easier decomposition. On the base of the results obtained the scheme of phase transformations of co-precipitated precursor leading to formation of MgAl2O4 is proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 28, Issue 13, September 2008, Pages 2495–2500
Journal: Journal of the European Ceramic Society - Volume 28, Issue 13, September 2008, Pages 2495–2500
نویسندگان
Anna Wajler, Henryk Tomaszewski, Ewa Drożdż-Cieśla, Helena Węglarz, Zbigniew Kaszkur,