کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1475898 991134 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of nano-crystalline apatite type electrolyte powders for solid oxide fuel cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis of nano-crystalline apatite type electrolyte powders for solid oxide fuel cells
چکیده انگلیسی

Rare earth silicates with apatite structure are being actively studied as an alternative electrolyte material for solid oxide fuel cells (SOFC) operating in the intermediate temperature range. In this paper we report on the synthesis of La9.33+x/3AlxSi6−xO26+δ (with x = 0–1.5) and La9.83Fe1.5Si4.5O26 powders using a modified sol–gel process. The parameters involved in the process have been optimized for preparing phase pure, homogeneous and nanometer sized powders. The obtained powders were characterized using scanning electron microscopy, X-ray diffraction and thermal analysis. Pressureless sintering experiments were performed and pellets having relative densities greater than 96% could be obtained after 5 h dwelling in the temperature range between 1500 and 1550 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 30, Issue 7, May 2010, Pages 1699–1706
نویسندگان
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