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Preparation method of copper-based oxide thermoelectric material
The invention discloses a preparation method of a copper-based oxide thermoelectric material. The preparation method comprises the following steps: mixing lanthanum oxide La2O3 and copper oxide CuO, and sequentially carrying out dry grinding and wet grinding in a ball-milling tank; drying the mixture subjected to dry grinding and wet grinding to obtain nano powder, placing the nano powder in a mold, pressing the nano powder into a sheet sample by an electric powder tablet press, and placing the sheet sample in a crucible with 99% of aluminum oxide; the crucible is put into a resistance furnace to be heated and subjected to heat preservation, and then the crucible is cooled to the room temperature along with the resistance furnace; taking out the flaky sample in the crucible, grinding and sieving to obtain nano powder of the copper-based oxide; the nano powder of the copper-based oxide is placed in a graphite mold, the graphite mold is placed in a discharge plasma sintering furnace to be sintered, and the blocky copper-based oxide La2CuO4 is obtained.The copper-based oxide which is low in raw material cost, high in heat stability, high in oxidation resistance and free of pollution to the environment is prepared.
本发明公开了一种铜基氧化物热电材料的制备方法，包括将氧化镧La2O3与氧化铜CuO进行混合后在球磨罐内依次进行干磨、湿磨；对干磨和湿磨后的混合物进行烘干得到的纳米粉末放置在模具中，通过电动粉末压片机进行压成片状样品，放置在具有99％氧化铝的坩埚中；将坩埚放入在电阻炉中进行加热、保温，然后随电阻炉冷却至室温；取出坩埚中的片状样品进行研磨和过筛，得到铜基氧化物的纳米粉体；将铜基氧化物的纳米粉体放置在石墨模具中，并将石墨模具放进放电等离子体烧结炉中烧结，得到块状的铜基氧化物La2CuO4，本发明制备出一种原料廉价、热稳定性高、抗氧化能力强、对环境无污染的铜基氧化物。
Preparation method of copper-based oxide thermoelectric material
The invention discloses a preparation method of a copper-based oxide thermoelectric material. The preparation method comprises the following steps: mixing lanthanum oxide La2O3 and copper oxide CuO, and sequentially carrying out dry grinding and wet grinding in a ball-milling tank; drying the mixture subjected to dry grinding and wet grinding to obtain nano powder, placing the nano powder in a mold, pressing the nano powder into a sheet sample by an electric powder tablet press, and placing the sheet sample in a crucible with 99% of aluminum oxide; the crucible is put into a resistance furnace to be heated and subjected to heat preservation, and then the crucible is cooled to the room temperature along with the resistance furnace; taking out the flaky sample in the crucible, grinding and sieving to obtain nano powder of the copper-based oxide; the nano powder of the copper-based oxide is placed in a graphite mold, the graphite mold is placed in a discharge plasma sintering furnace to be sintered, and the blocky copper-based oxide La2CuO4 is obtained.The copper-based oxide which is low in raw material cost, high in heat stability, high in oxidation resistance and free of pollution to the environment is prepared.
本发明公开了一种铜基氧化物热电材料的制备方法，包括将氧化镧La2O3与氧化铜CuO进行混合后在球磨罐内依次进行干磨、湿磨；对干磨和湿磨后的混合物进行烘干得到的纳米粉末放置在模具中，通过电动粉末压片机进行压成片状样品，放置在具有99％氧化铝的坩埚中；将坩埚放入在电阻炉中进行加热、保温，然后随电阻炉冷却至室温；取出坩埚中的片状样品进行研磨和过筛，得到铜基氧化物的纳米粉体；将铜基氧化物的纳米粉体放置在石墨模具中，并将石墨模具放进放电等离子体烧结炉中烧结，得到块状的铜基氧化物La2CuO4，本发明制备出一种原料廉价、热稳定性高、抗氧化能力强、对环境无污染的铜基氧化物。
Preparation method of copper-based oxide thermoelectric material
一种铜基氧化物热电材料的制备方法
ZHAO LIDONG (author) / LIU SHAN (author) / ZHANG XIAO (author) / HONG TAO (author)
2022-06-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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