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Preparation method of porous indium oxide ceramic thermoelectric material
The invention discloses a preparation method of a porous indium oxide ceramic thermoelectric material, and belongs to the technical field of thermoelectric materials. The preparation method comprises the following steps: weighing various raw materials such as In2O3, WO3 and Ta2O5 according to a ratio, pouring the raw materials into a ball milling tank, uniformly ball-milling in a planetary ball mill by taking absolute ethyl alcohol as a medium, drying, sieving, putting the sieved powder into a stainless steel mold, maintaining the pressure under a certain pressure to obtain a ceramic green body, then putting the ceramic green body into a high-temperature furnace, and sintering, so as to obtain the ceramic. And carrying out high-temperature solid-phase reaction to obtain a compact ceramic green body, carrying out furnace cooling after calcination is finished, and taking out a block after the temperature is reduced to room temperature to obtain the WO3 and Ta2O5 doped indium oxide porous ceramic thermoelectric material. The conductivity of the doped sample is greatly improved, the lattice thermal conductivity is optimized through WO3 pore forming, and meanwhile, the density of the secondarily sintered sample is improved by 10% compared with that of a pure sample. The method has the advantages of simple required equipment, easiness in operation, low cost and remarkable effect.
本发明公开了一种多孔氧化铟陶瓷热电材料的制备方法，属于热电材料技术领域。制备方法为：按比例称取In2O3、WO3和Ta2O5各类原料，将其倒入球磨罐中，以无水乙醇为介质，在行星式球磨机中球磨均匀后，将其干燥、过筛，过筛后的粉体置于不锈钢模具中，在一定的压力下保压，得到陶瓷坯体，随后放入到高温炉中进行烧结，完成高温固相反应，得到致密的陶瓷坯体，煅烧结束后随炉冷却，待温度降至室温取出块体，得到WO3和Ta2O5掺杂的氧化铟多孔陶瓷热电材料。掺杂后的样品电导率大幅度提升的同时WO3造孔使得晶格热导率得到了优化，同时二次烧结后的样品致密度相较纯样品提高了10％。该方法具有所需设备简单，易操作，成本低，效果显著的优点。
Preparation method of porous indium oxide ceramic thermoelectric material
The invention discloses a preparation method of a porous indium oxide ceramic thermoelectric material, and belongs to the technical field of thermoelectric materials. The preparation method comprises the following steps: weighing various raw materials such as In2O3, WO3 and Ta2O5 according to a ratio, pouring the raw materials into a ball milling tank, uniformly ball-milling in a planetary ball mill by taking absolute ethyl alcohol as a medium, drying, sieving, putting the sieved powder into a stainless steel mold, maintaining the pressure under a certain pressure to obtain a ceramic green body, then putting the ceramic green body into a high-temperature furnace, and sintering, so as to obtain the ceramic. And carrying out high-temperature solid-phase reaction to obtain a compact ceramic green body, carrying out furnace cooling after calcination is finished, and taking out a block after the temperature is reduced to room temperature to obtain the WO3 and Ta2O5 doped indium oxide porous ceramic thermoelectric material. The conductivity of the doped sample is greatly improved, the lattice thermal conductivity is optimized through WO3 pore forming, and meanwhile, the density of the secondarily sintered sample is improved by 10% compared with that of a pure sample. The method has the advantages of simple required equipment, easiness in operation, low cost and remarkable effect.
本发明公开了一种多孔氧化铟陶瓷热电材料的制备方法，属于热电材料技术领域。制备方法为：按比例称取In2O3、WO3和Ta2O5各类原料，将其倒入球磨罐中，以无水乙醇为介质，在行星式球磨机中球磨均匀后，将其干燥、过筛，过筛后的粉体置于不锈钢模具中，在一定的压力下保压，得到陶瓷坯体，随后放入到高温炉中进行烧结，完成高温固相反应，得到致密的陶瓷坯体，煅烧结束后随炉冷却，待温度降至室温取出块体，得到WO3和Ta2O5掺杂的氧化铟多孔陶瓷热电材料。掺杂后的样品电导率大幅度提升的同时WO3造孔使得晶格热导率得到了优化，同时二次烧结后的样品致密度相较纯样品提高了10％。该方法具有所需设备简单，易操作，成本低，效果显著的优点。
Preparation method of porous indium oxide ceramic thermoelectric material
一种多孔氧化铟陶瓷热电材料的制备方法
GE ZHENHUA (author) / ZHONG TIANYU (author) / LI ZUGANG (author) / YAMAIZUMI (author) / FENG JING (author)
2024-07-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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