کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8003114 1516316 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Sr substitution for Ca on the Ca3Co4O9 thermoelectric properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of Sr substitution for Ca on the Ca3Co4O9 thermoelectric properties
چکیده انگلیسی
Ca3−xSrxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Sr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Sr has been incorporated into the Ca3Co4O9 and Ca3Co2O6 structures and no Sr-based secondary phases have been produced. Apparent density measurements have shown that samples slightly increase their density until 0.05 Sr content, decreasing for higher contents. Electrical resistivity decreases and Seebeck coefficient slightly raises when Sr content increases until 0.07 Sr addition. The improvement in both parameters leads to higher power factor values than the usually obtained in samples prepared by the conventional solid state routes and close to those obtained in textured materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 577, 15 November 2013, Pages 511-515
نویسندگان
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