کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
833414 908142 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of sintering temperature and dwell time and pressing pressure on Ba0.5Sr0.5Co0.8Fe0.2O3−δ perovskite-type membranes
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of sintering temperature and dwell time and pressing pressure on Ba0.5Sr0.5Co0.8Fe0.2O3−δ perovskite-type membranes
چکیده انگلیسی

Ba0.5Sr0.5Co0.8Fe0.2O0.3−δ (designed as BSCF) oxides prepared at different shaping and sintering parameters under the same powder synthesis method were examined in terms of micro structure and disk densities. The oxide powders were synthesized using citrate–EDTA complexing method. The synthesized powders were then formed to disk shaped membranes at sintering temperatures of 1000, 1050 and 1150 °C, pressing pressures of 1000, 2000 and 2500 bar and sintering dwell times of 2, 6 and 10 h, as the best values to cover common used ranges of the parameters. X-ray diffraction (XRD) results of all samples prepared at different condition revealed that the basic structure of perovskite was formed. Although the samples prepared at different conditions have nearly the same microstructure, they demonstrated different relative densities, porosities and grain morphologies. The membrane synthesized at highest temperature and pressure showed the highest relative density, vigorous growth of crystals, better fusion of perovskite structure and less pore numbers. The result showed that the best sintering dwell time is about 8–9 and after that time there is no change in membrane characteristics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 28, Issue 5, 2007, Pages 1699–1706
نویسندگان
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