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Chemical furnace synthesis method of SiB6
The invention provides a chemical furnace synthesis method of SiB6, which comprises the following steps: (1) preparing a block body: weighing silicon powder and boron powder according to a ratio, mixing, and pressing into the block body; (2) preparing a thermite, wherein the thermite comprises titanium powder, carbon powder, aluminum powder and ferric oxide; (3) placing a thermite in a crucible, wrapping the block with carbon paper, and burying the block in the mixed thermite; (4) igniting the thermite to generate self-propagating, and promoting the raw materials to react with each other by utilizing heat emitted by the thermite; and (5) removing impurities through acid washing and water washing to obtain SiB6 and SiB4 products. The Si powder and the B powder are used as raw materials, reaction is initiated under the exothermic condition of the thermite, the reaction only needs tens of seconds, the SiB6 powder product is obtained through acid pickling and purification, and the near-infrared band emissivity is high.
本发明提供了一种SiB6的化学炉合成方法，包括以下步骤：①制备块体：按照比例称取硅粉和硼粉混料，压制成块体；②制备铝热剂：所述铝热剂包括钛粉、碳粉、铝粉和氧化铁；③将铝热剂放置在坩埚中，使用碳纸包裹住所述块体，埋入混合好的铝热剂中；④引燃铝热剂发生自蔓延，利用铝热剂发出的热量促使原料相互发生反应；⑤通过酸洗、水洗，将杂质去除，得到SiB6和SiB4产物。本发明以Si粉、B粉为原料，在铝热剂的放热条件下引发反应，反应仅需数十秒，通过酸洗纯化得到SiB6粉体产物，并且近红外波段发射率较高。
Chemical furnace synthesis method of SiB6
The invention provides a chemical furnace synthesis method of SiB6, which comprises the following steps: (1) preparing a block body: weighing silicon powder and boron powder according to a ratio, mixing, and pressing into the block body; (2) preparing a thermite, wherein the thermite comprises titanium powder, carbon powder, aluminum powder and ferric oxide; (3) placing a thermite in a crucible, wrapping the block with carbon paper, and burying the block in the mixed thermite; (4) igniting the thermite to generate self-propagating, and promoting the raw materials to react with each other by utilizing heat emitted by the thermite; and (5) removing impurities through acid washing and water washing to obtain SiB6 and SiB4 products. The Si powder and the B powder are used as raw materials, reaction is initiated under the exothermic condition of the thermite, the reaction only needs tens of seconds, the SiB6 powder product is obtained through acid pickling and purification, and the near-infrared band emissivity is high.
本发明提供了一种SiB6的化学炉合成方法，包括以下步骤：①制备块体：按照比例称取硅粉和硼粉混料，压制成块体；②制备铝热剂：所述铝热剂包括钛粉、碳粉、铝粉和氧化铁；③将铝热剂放置在坩埚中，使用碳纸包裹住所述块体，埋入混合好的铝热剂中；④引燃铝热剂发生自蔓延，利用铝热剂发出的热量促使原料相互发生反应；⑤通过酸洗、水洗，将杂质去除，得到SiB6和SiB4产物。本发明以Si粉、B粉为原料，在铝热剂的放热条件下引发反应，反应仅需数十秒，通过酸洗纯化得到SiB6粉体产物，并且近红外波段发射率较高。
Chemical furnace synthesis method of SiB6
一种SiB6的化学炉合成方法
SHUANG SHUANG (author) / HE GANG (author) / CHEN YIXIANG (author) / YANG ZENGCHAO (author) / LI JIANGTAO (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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