Thermal conductivity of (Hf<sub>1鈭?span style='font-style: italic'>xsub>Zr<sub>xsub>)<sub>6sub>Ta<sub>2sub>O<sub>17sub> (x = 0, 0.1, 0.3 and 0.5) ceramics
- 作者：Miao Li<sup> ; sup><sup>limiaobit@gmail.comsup> ; Qiang Xu ; Lu Wang
- 关键词：C. Thermal conductivity ; (Hf1&minus ; xZrx)6Ta2O17 ; Zirconium doped
- 刊名：Ceramics International
- 出版年：2012
- 期刊代码：13_02728842
- 类别：ms
- 出版时间：July, 2012
- 卷：38
- 期：5
- 页码：4357-4361
- 文件大小：967 K
摘要
(Hf<sub>1鈭?em>xsub>Zr<sub>xsub>)<sub>6sub>Ta<sub>2sub>O<sub>17sub> (x = 0, 0.1, 0.3 and 0.5) ceramic powders were synthesized by conventional solid-state method. The samples of these ceramics were prepared by pressureless sintering process at 1600 掳C for 8 h in air. X-ray diffraction characterization indicated that all samples were single phase with orthorhombic structure. The thermal diffusivities of the samples from 200 掳C to 1000 掳C were characterized by laser flash diffusivity measurement. The thermal conductivities of (Hf<sub>1鈭?em>xsub>Zr<sub>xsub>)<sub>6sub>Ta<sub>2sub>O<sub>17sub> decreased with the increase of zirconium content x. Thermal conductivity of (Hf<sub>0.5sub>Zr<sub>0.5sub>)<sub>6sub>Ta<sub>2sub>O<sub>17sub> was about 2.75 W/m K which was comparable with that of dense partially yttria-stabilized zirconia (鈭?.5 W/m K).