| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7887344 | Ceramics International | 2018 | 4 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Chen Xiaoge, Zhang Hongsong, Liu Yanxu, Zhao Yongde, Ren Bo, Tang An, Lu Kui,