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Method for preparing thermoelectric components and thermoelectric components

A technology of thermoelectric elements and components, which is applied in the manufacture/processing of thermoelectric devices, materials for junction leads of thermoelectric devices, etc.

Active Publication Date: 2017-07-14
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for the preparation of special-shaped thermoelectric elements such as hexagons and polygons (the elements include intermediate layers and electrodes), this field has not yet developed a simple and controllable process, and the prepared special-shaped elements have precise dimensions and good surface quality.

Method used

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  • Method for preparing thermoelectric components and thermoelectric components
  • Method for preparing thermoelectric components and thermoelectric components
  • Method for preparing thermoelectric components and thermoelectric components

Examples

Experimental program
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Effect test

Embodiment 1

[0099] According to the following steps, use spark plasma sintering (SPS) to prepare hollow structural blocks:

[0100] The skutterudite material CeFe was prepared by melting and heat treatment. 4 Sb 12 . Place 20g of powder in a specially designed graphite mold with a hollow structure. Then, the powder is sintered into a block by the SPS process, the heating rate is 40K / min, the sintering temperature is 843K, the holding time is 30min, and the sintering pressure is 60MPa. After the furnace is cooled, the sample with a hollow structure is taken out of the mold, and then the sample is refined by wire cutting to obtain a sample of a predetermined size. Finally, wire cutting or laser cutting is used to cut the hollow structure block into thin slices of specified thickness.

Embodiment 2

[0102] According to the following steps, the spark plasma sintering method is used to prepare the hexagonal hollow block:

[0103] The composition is ZrNiSn prepared by solid-phase reaction or arc melting heating treatment 0.99 Sb 0.01 s material. Put 20g of powder material into a graphite mold with a hexagonal structure. Then, the powder is sintered into a block using the SPS process. The heating rate is 30K / min, the sintering temperature is 923K, the holding time is 30min, and the sintering pressure is 50MPa. After the furnace is cooled, the sample is taken out of the mold. Use a drilling machine to drill a 1mm hole axially in the center of the sample, and then use wire cutting to form a hexagonal cavity in the center of the sample. Finally, the hexagonal hollow block is cut into slices of a predetermined size and thickness.

Embodiment 3

[0105] According to the following steps, the hexagonal hollow block is prepared by hot pressing sintering and assembling method:

[0106] The skutterudite material Yb was prepared by melting and heat treatment. 0.3 CO 4 Sb 12 . Place the electrode sheet, the middle layer sheet and 20 g of skutterudite powder in a square graphite mold. Then, the powder is sintered into a block by a hot pressing process, the heating rate is 40K / min, the sintering temperature is 893K, the holding time is 60min, and the sintering pressure is 30MPa. After the furnace is cooled, the square sample is taken out of the mold. Then, the sample is processed by wire cutting, cut and refined into a preset part (see figure 1 In a), the bottom of the trapezoid of the refined part is the electrode layer (hot end). The cold end electrode is formed on the upper bottom of the trapezoidal part by electroplating. Finally, the six parts are assembled into a complete thermoelectric element with a hexagonal hollow st...

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Abstract

The present invention relates to a method for preparing thermoelectric components and thermoelectric components, and provides a method for preparing thermoelectric components, the method comprising: (a) providing a large number of thermoelectric material sheets or thermoelectric element sheets, each sheet having at least one predetermined shape; (b) arranging a plurality of thermoelectric material sheets or thermoelectric element sheets into a predetermined combination, and connecting the plurality of thermoelectric material sheets or thermoelectric element sheets to form a thermoelectric material segment or thermoelectric element segment; (c) repeating steps (b) to produce a plurality of segments; and (d) joining said plurality of segments together to produce a predetermined configuration for the thermoelectric component. A thermoelectric element is also provided.

Description

Technical field [0001] The invention belongs to the field of thermoelectric materials and devices, and relates to a method for directly preparing hollow thermoelectric samples with simple process and easy control. More specifically, it relates to a method for preparing thermoelectric components and thermoelectric components. Background technique [0002] Thermoelectric technology can convert heat into electricity and vice versa. This environmentally friendly technology has many advantages over other technologies, such as no mechanical parts, no noise during use, and less maintenance. Unlike previous applications such as military, medical, and space applications, thermoelectric technology applications have recently shifted to the power generation of automobiles and industrial waste heat. Many industrial and transportation processes are accompanied by waste heat generated by the burning of fossil fuels. The rising price of fossil fuels and the destructive effects on the environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L35/34H01L35/16
Inventor 黄向阳陈立东李小亚唐云山夏绪贵
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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