کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7887344 | 1509789 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal properties of RE2AlTaO7 (RE = Gd and Yb) oxides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the current paper, the synthesis of RE2AlTaO7 (RE = Gd and Yb) oxides was performed through a high-temperature sintering method using Gd2O3, Yb2O3, Al2O3 and Ta2O5 as raw chemicals. The phase-structure, micro-morphology and thermal-physical properties of RE2AlTaO7 (RE = Gd and Yb) oxides were analyzed. The RE2AlTaO7 (RE = Gd and Yb) oxides exhibit single pyrochlore-type crystal-structure. Compared to Yb2AlTaO7, the Gd2AlTaO7 has greater thermal conductivity owning to relatively weaker phonon scattering. Because of higher electro-negativity of Yb, the Yb2AlTaO7 has lower coefficient of thermal expansion than Gd2AlTaO7. The RE2AlTaO7 (RE = Gd and Yb) oxides also exhibit no phase-transition between ambient and 1473â¯K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10762-10765
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10762-10765
نویسندگان
Chen Xiaoge, Zhang Hongsong, Liu Yanxu, Zhao Yongde, Ren Bo, Tang An, Lu Kui,