کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5438532 1398185 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of Yb Substitution for La on Thermophysical Property of La2AlTaO7 Ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Influence of Yb Substitution for La on Thermophysical Property of La2AlTaO7 Ceramics
چکیده انگلیسی
The (La1−xYbx)2AlTaO7 ceramics were synthesized by pressureless sintering process at 1600 °C for 10 h in air. The crystal phase, microstructure and thermophysical properties were investigated. Results show that pure (La1−xYbx)2AlTaO7 cermics with single weberite structure are prepared successfully. Owing to the reduction of crystal-lattice tolerance-factor, the thermal conductivity of (La1−xYbx)2AlTaO7 (x>0) ceramics increases with increasing Yb2O3 fraction at identical temperatures, which is lower than that of La2AlTaO7. Due to the relatively high electro-negativity of Yb element, the addition of Yb2O3 increases the thermal expansion coefficient of (La1−xYbx)2AlTaO7 ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 10, July 2017, Pages 7537-7542
نویسندگان
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