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Method for rapidly preparing multi-scale nano composite structure beta-FeSi2 thermoelectric material by atomization quick freezing crystallization method
The invention discloses a method for rapidly preparing a beta-FeSi2 thermoelectric material with a multi-scale nano-composite structure by an atomization quick freezing crystallization method, which comprises the following steps of: putting elemental Fe and elemental Si which are uniformly mixed into a smelting furnace, and smelting in a protective atmosphere to obtain a melt; spraying air at the top of the smelting furnace to atomize the melt, and spraying the melt to the surface of a metal disc through a nozzle at the bottom of the smelting furnace; the metal disc continuously rotates in the working period, the atomized melt is cooled on the surface of the metal disc and thrown away in the rotating direction of the metal disc, and amorphous/nanocrystalline powder is obtained; and grinding and tabletting the obtained amorphous/nanocrystalline powder, and sintering under a vacuum condition to obtain the blocky nano composite phase beta-FeSi2 thermoelectric material. According to the method disclosed by the invention, the single-phase beta-FeSi2 thermoelectric material can be rapidly prepared, and the beta-FeSi2 thermoelectric material also has a multi-scale nano composite structure.
本发明公开了雾化急冻结晶法快速制备多尺度纳米复合结构β‑FeSi2热电材料的方法，将混合均匀的单质Fe和单质Si置于熔炼炉中，在保护气氛下熔炼，得到熔体；在熔炼炉顶部施加喷气，使熔体雾化，通过熔炼炉底部的嘴喷射到金属盘表面；所述金属盘在工作期间持续旋转，雾化的熔体在金属盘表面冷却并沿着金属盘旋转的方向甩开，得到非晶/纳米晶的粉状物；将得到的非晶/纳米晶的粉状物研磨、压片后在真空条件下进行烧结，得到块状纳米复合相的β‑FeSi2热电材料。本发明的方法能够快速制备单相的β‑FeSi2热电材料，所述β‑FeSi2热电材料还具有多尺度的纳米复合结构。
Method for rapidly preparing multi-scale nano composite structure beta-FeSi2 thermoelectric material by atomization quick freezing crystallization method
The invention discloses a method for rapidly preparing a beta-FeSi2 thermoelectric material with a multi-scale nano-composite structure by an atomization quick freezing crystallization method, which comprises the following steps of: putting elemental Fe and elemental Si which are uniformly mixed into a smelting furnace, and smelting in a protective atmosphere to obtain a melt; spraying air at the top of the smelting furnace to atomize the melt, and spraying the melt to the surface of a metal disc through a nozzle at the bottom of the smelting furnace; the metal disc continuously rotates in the working period, the atomized melt is cooled on the surface of the metal disc and thrown away in the rotating direction of the metal disc, and amorphous/nanocrystalline powder is obtained; and grinding and tabletting the obtained amorphous/nanocrystalline powder, and sintering under a vacuum condition to obtain the blocky nano composite phase beta-FeSi2 thermoelectric material. According to the method disclosed by the invention, the single-phase beta-FeSi2 thermoelectric material can be rapidly prepared, and the beta-FeSi2 thermoelectric material also has a multi-scale nano composite structure.
本发明公开了雾化急冻结晶法快速制备多尺度纳米复合结构β‑FeSi2热电材料的方法，将混合均匀的单质Fe和单质Si置于熔炼炉中，在保护气氛下熔炼，得到熔体；在熔炼炉顶部施加喷气，使熔体雾化，通过熔炼炉底部的嘴喷射到金属盘表面；所述金属盘在工作期间持续旋转，雾化的熔体在金属盘表面冷却并沿着金属盘旋转的方向甩开，得到非晶/纳米晶的粉状物；将得到的非晶/纳米晶的粉状物研磨、压片后在真空条件下进行烧结，得到块状纳米复合相的β‑FeSi2热电材料。本发明的方法能够快速制备单相的β‑FeSi2热电材料，所述β‑FeSi2热电材料还具有多尺度的纳米复合结构。
Method for rapidly preparing multi-scale nano composite structure beta-FeSi2 thermoelectric material by atomization quick freezing crystallization method
雾化急冻结晶法快速制备多尺度纳米复合结构β-FeSi2热电材料的方法
LI HAN (Autor:in) / FENG SONGWEI (Autor:in) / LEI KANG (Autor:in)
01.03.2022
Patent
Elektronische Ressource
Chinesisch
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