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Method for preparing magnesium silicide thermoelectric material block, device and thermoelectric material block

A technology of thermoelectric materials and magnesium silicide, which is applied in the direction of thermoelectric device junction lead-out materials, thermoelectric device manufacturing/processing, thermoelectric devices that only use Peltier or Seebeck effect, etc., can solve the problem of not taking into account the preparation efficiency of thermoelectric material blocks at the same time Density and other issues, to achieve the effect of high density, rich resources and large reserves

Pending Publication Date: 2020-01-24
上海彩石激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] What the present invention aims to solve is the technical problem that the production efficiency and the density of the prepared thermoelectric material block cannot be taken into account at the same time when preparing a large-scale thermoelectric material block in the prior art. The present invention provides a method for preparing a magnesium silicide thermoelectric material block Method, device and thermoelectric material block

Method used

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  • Method for preparing magnesium silicide thermoelectric material block, device and thermoelectric material block
  • Method for preparing magnesium silicide thermoelectric material block, device and thermoelectric material block

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Embodiment 1

[0042] In order to facilitate the understanding of the present invention, before specifically introducing a method for preparing a magnesium silicide thermoelectric material block provided in this embodiment, the laser cladding process and the additive manufacturing process are briefly described respectively.

[0043]The laser cladding (Laser Cladding) process, also known as laser cladding or laser cladding, is a new surface modification technology. It puts the selected coating material on the surface of the cladding substrate through different feeding methods, and then irradiates it with laser to melt it and a thin layer on the surface of the substrate at the same time, and after rapid solidification, the dilution is extremely low, which is different from the above-mentioned coating materials. Metallurgically bonded surface coating on the above-mentioned substrate, which can significantly improve the wear resistance, corrosion resistance, heat resistance, oxidation resistance ...

Embodiment 2

[0064] This embodiment provides a device for preparing magnesium silicide thermoelectric material block, as attached figure 2 As shown, the device for preparing magnesium silicide thermoelectric materials in this embodiment includes: a closed environment box 100 , a laser 101 and a laser head 102 , a laser cladding nozzle 103 and a powder feeding mechanism 104 . The laser head 100 and the laser cladding nozzle 103 are located in the airtight environment box 100 .

[0065] The laser 101 is connected to the laser head 102 through an optical fiber, and the laser 101 provides a high-energy laser beam for the laser head 102, and the laser head 102 is connected to the laser cladding nozzle 103; the laser head 102 It is used to adjust and focus the laser beam, and deliver the focused laser beam to the laser cladding nozzle 103, and the laser beam is delivered to the substrate KY1 located below the laser cladding nozzle 103 to form Melting pool; the powder feeding mechanism 104 incl...

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Abstract

The invention provides a method for preparing a magnesium silicide thermoelectric material block and a thermoelectric material block. According to the method, magnesium silicide and pure magnesium powder, adopted as cladding powder, are directly molded into the magnesium silicide thermoelectric material block with thermoelectric performance through a laser cladding technology and an additive manufacturing technology. With the method for preparing the magnesium silicide thermoelectric material block provided by the invention adopted, the preparation of a large-sized and complexly-shaped thermoelectric material block can be realized; and the thermoelectric material block prepared by the method for preparing the magnesium silicide thermoelectric material block provided by the invention is high in density.

Description

technical field [0001] The invention relates to the field of thermoelectric material manufacturing, in particular to a method and device for preparing a magnesium silicide thermoelectric material block and a thermoelectric material block. Background technique [0002] Thermoelectric materials are functional materials that can convert thermal energy and electrical energy. The Seebeck effect discovered in 1823 and the Peltier effect discovered in 1834 provide a theoretical basis for the application of thermoelectric energy converters and thermoelectric refrigeration. Thermoelectric generators or thermoelectric refrigeration equipment made of thermoelectric materials have the following advantages: (1) small size, light weight, firmness and no noise during operation; (2) temperature control can be within ±0.1°C; (3) no need to use Freon (CFC, Chlorofluorocarbon, chlorofluorocarbons), will not cause any environmental pollution (CFC is considered to destroy the odor layer); (4) he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/14H01L35/28H01L35/34H10N10/851H10N10/01H10N10/10
CPCH10N10/851H10N10/10H10N10/01
Inventor 吴志玮路瑶孟金博
Owner 上海彩石激光科技有限公司