کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298747 1498371 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanosynthesis of La1 − xSrxGa1 − yMgyO3 − δ materials
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Mechanosynthesis of La1 − xSrxGa1 − yMgyO3 − δ materials
چکیده انگلیسی

The room temperature mechanosynthesis of La1 − xSrxGa1 − yMgyO3 − δ was demonstrated for a broad compositional range (x = 0.05, y = 0.10; x = 0.20, y = 0.20). This was achieved in atmospheric air with a planetary ball mill at 650 rpm in nylon containers rotating at 1300 rpm in the opposite direction. The maximum milling time was 360 min so that Zr contamination was kept below 0.25 mass%, as detected by ICP-AES. Powder X-ray diffraction revealed the formation of a perovskite phase since the early milling stages that becomes dominant in the patterns collected after milling for 360 min. The average crystallite diameter determined from XRD was ca. 30 nm, in good agreement with transmission electron microscopy observations. Ceramics with 93% of the theoretical density were obtained after sintering at 1300 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 179, Issues 21–26, 15 September 2008, Pages 991–994
نویسندگان
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