Preparation and characterization of highly porous Yb2SiO5 ceramics using water-based freeze-casting
Preparation and characterization of highly porous Yb2SiO5 ceramics using water-based freeze-casting
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DOI：
10.1007/s10934-015-0110-y
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发表时间：
2016-04
影响因子：
2.6
通讯作者：
B. Han;Rubing Zhang;D. Fang
中科院分区：
文献类型：
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作者：
B. Han;Rubing Zhang;D. Fang
本文介绍了一种新型的、高孔隙率的Yb 2SiO 5陶瓷，采用水基冷冻铸造技术制备。所制备的多孔Yb 2SiO 5陶瓷具有超高的孔隙率（82- 86%）和定制的孔结构。研究了烧结温度对陶瓷孔结构、热导率和力学性能的影响。在1450 °C下制备的具有15体积%固体含量的样品具有超低线性收缩率（4.85%）、超高孔隙率（83.95%）、高压缩强度（2.15MPa）和低热导率（0.121W/m K）。此外，该样品在1500 °C下显示出相对高的压缩强度（1.15MPa）。这些结果突出了高度多孔的Yb 2SiO 5陶瓷作为超高温环境中的绝热材料的潜在应用。
This study introduces a new, highly porous Yb2SiO5ceramic prepared using a water-based freeze-casting technique. The prepared porous Yb2SiO5ceramic had ultra-high porosity (82–86 %) and tailored pore structures. The effects of sintering temperature on the pore structure, thermal conductivity, and mechanical properties of these ceramics were investigated. The sample with 15 vol% solid content prepared at 1450 °C had ultra-low linear shrinkage (4.85 %), ultra-high porosity (83.95 %), high compressive strength (2.15 MPa), and low thermal conductivity (0.121 W/m K). In addition, this sample showed a relatively high compressive strength (1.15 MPa) at 1500 °C. These results highlight the potential application of highly porous Yb2SiO5ceramics as thermal insulator materials in ultra-high temperature environments.