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Preparation method of N-type bismuth telluride thermoelectric block material
The invention discloses a preparation method of an N-type bismuth telluride thermoelectric block material, and belongs to the technical field of thermoelectric materials. The preparation method comprises the following steps: carrying out SPS sintering on Bi, Te and Se powder subjected to mechanical alloying to obtain a densified block material, carrying out thermal deformation treatment on the block material, and further regulating and controlling the microstructure of the material, thereby preparing the N-type bismuth telluride thermoelectric block material. The preparation method is simple in process, short in production period and high in production efficiency, the prepared N-type bismuth telluride thermoelectric block material is excellent in mechanical property and thermoelectric property, and the requirements for diversification and high performance of refrigeration devices can be met.
本发明公开了一种N型碲化铋热电块体材料的制备方法，属于热电材料技术领域。本发明将经过机械合金化的Bi、Te、Se粉末进行SPS烧结，得到致密化的块体材料，然后对块体材料进行热变形处理，进一步调控材料的微结构，从而制备得到N型碲化铋热电块体材料。本发明的工艺简单、生产周期短且生产效率高，制备得到的N型碲化铋热电块体材料机械性能和热电性能优异，能够满足制冷器件多样化和高性能化的需求。
Preparation method of N-type bismuth telluride thermoelectric block material
The invention discloses a preparation method of an N-type bismuth telluride thermoelectric block material, and belongs to the technical field of thermoelectric materials. The preparation method comprises the following steps: carrying out SPS sintering on Bi, Te and Se powder subjected to mechanical alloying to obtain a densified block material, carrying out thermal deformation treatment on the block material, and further regulating and controlling the microstructure of the material, thereby preparing the N-type bismuth telluride thermoelectric block material. The preparation method is simple in process, short in production period and high in production efficiency, the prepared N-type bismuth telluride thermoelectric block material is excellent in mechanical property and thermoelectric property, and the requirements for diversification and high performance of refrigeration devices can be met.
本发明公开了一种N型碲化铋热电块体材料的制备方法，属于热电材料技术领域。本发明将经过机械合金化的Bi、Te、Se粉末进行SPS烧结，得到致密化的块体材料，然后对块体材料进行热变形处理，进一步调控材料的微结构，从而制备得到N型碲化铋热电块体材料。本发明的工艺简单、生产周期短且生产效率高，制备得到的N型碲化铋热电块体材料机械性能和热电性能优异，能够满足制冷器件多样化和高性能化的需求。
Preparation method of N-type bismuth telluride thermoelectric block material
一种N型碲化铋热电块体材料的制备方法
LIU FENGMING (author)
2020-11-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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