Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing silicon oxynitride powder in air atmosphere
The invention discloses a method for preparing silicon oxynitride powder in an air atmosphere. According to the method, silicon powder is used as a raw material, silicon powder accumulation bodies with different particle sizes and thicknesses are subjected to nitrogen oxidation synthesis under the conditions of normal pressure and high temperature, and then an upper-layer micro-sintering state anda small amount of edge products are removed to obtain a silicon oxynitride powder finished product. Compared with the prior art, the invention has the advantages that: silicon oxide, silicon nitrideand other impurity phases generated by the nitrogen oxidation reaction can be easily separated from silicon oxynitride, so that the product purity is greatly improved, the yield is very high, normal-pressure air is used as a nitrogen source and an oxygen source, the cost is saved, and the preparation method is simple in process, easy to operate, low in cost and suitable for industrial large-scaleproduction.
本发明公开了一种空气气氛下制备氮氧化硅粉体的方法。该法以硅粉为原料，通过将不同粒径和厚度的硅粉堆积体，在常压高温条件下进行氮氧化合成，再除去上层微烧结态及少量边部产物后，得到氮氧化硅粉体成品。本发明相对现有技术，不但使得氮氧化反应生成的氧化硅、氮化硅等杂相易与氮氧化硅分离，从而大幅度提高产品纯度，而且收得率也非常高，再者利用常压空气作为氮、氧源，节约成本，使得该制备方法，工艺简单，易于操作，成本低廉，适合于工业大规模生产。
Method for preparing silicon oxynitride powder in air atmosphere
The invention discloses a method for preparing silicon oxynitride powder in an air atmosphere. According to the method, silicon powder is used as a raw material, silicon powder accumulation bodies with different particle sizes and thicknesses are subjected to nitrogen oxidation synthesis under the conditions of normal pressure and high temperature, and then an upper-layer micro-sintering state anda small amount of edge products are removed to obtain a silicon oxynitride powder finished product. Compared with the prior art, the invention has the advantages that: silicon oxide, silicon nitrideand other impurity phases generated by the nitrogen oxidation reaction can be easily separated from silicon oxynitride, so that the product purity is greatly improved, the yield is very high, normal-pressure air is used as a nitrogen source and an oxygen source, the cost is saved, and the preparation method is simple in process, easy to operate, low in cost and suitable for industrial large-scaleproduction.
本发明公开了一种空气气氛下制备氮氧化硅粉体的方法。该法以硅粉为原料，通过将不同粒径和厚度的硅粉堆积体，在常压高温条件下进行氮氧化合成，再除去上层微烧结态及少量边部产物后，得到氮氧化硅粉体成品。本发明相对现有技术，不但使得氮氧化反应生成的氧化硅、氮化硅等杂相易与氮氧化硅分离，从而大幅度提高产品纯度，而且收得率也非常高，再者利用常压空气作为氮、氧源，节约成本，使得该制备方法，工艺简单，易于操作，成本低廉，适合于工业大规模生产。
Method for preparing silicon oxynitride powder in air atmosphere
一种空气气氛下制备氮氧化硅粉体的方法
YIN CHUANQIANG (Autor:in) / ZHOU LANG (Autor:in) / LI XIAOMIN (Autor:in) / WEI XIUQIN (Autor:in) / LAN YU (Autor:in)
19.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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