Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of silicon nitride powder and silicon nitride powder
The embodiment of the invention provides a preparation method of silicon nitride powder and the silicon nitride powder, and relates to the technical field of silicon nitride.The method comprises the steps that silicon powder, a diluent and a catalyst are mixed according to a preset proportion, ethyl alcohol is used as a solvent, and a mixture is obtained; the preparation method comprises the following steps: carrying out ball-milling mixing on proportioned silicon powder, a diluent, a catalyst and a solvent in a ball mill through silicon nitride grinding balls to obtain slurry, and drying, cooling and sieving the slurry to obtain silicon-based precursor powder; the preparation method comprises the following steps: putting silicon-based precursor powder into a constant-temperature section of a tubular heating furnace, putting a mixture of melamine and polyvinyl chloride as an activating agent into a non-constant-temperature section, close to one side of an air inlet, of the tubular heating furnace, continuously introducing nitrogen into the tubular heating furnace, and reacting at a target temperature to obtain the silicon nitride powder. The quality of the silicon nitride powder can be improved.
本公开实施例提供了一种氮化硅粉体的制备方法及氮化硅粉体，涉及氮化硅技术领域，该方法包括：将硅粉、稀释剂与催化剂按预设比例进行配料，用乙醇作为溶剂，将配比好的硅粉、稀释剂、催化剂和溶剂在球磨机中通过氮化硅磨球进行球磨混合得到浆料，对所述浆料进行干燥、冷却以及过筛，获得硅基前驱体粉末；将硅基前驱体粉末置于管式加热炉的恒温段，将三聚氰胺与聚氯乙烯的混合物作为活化剂置于所述管式加热炉的靠近进气口一侧的非恒温段，向所述管式加热炉内持续通入氮气，在目标温度下进行反应，获得所述氮化硅粉体。本公开能够提高氮化硅粉体的质量。
Preparation method of silicon nitride powder and silicon nitride powder
The embodiment of the invention provides a preparation method of silicon nitride powder and the silicon nitride powder, and relates to the technical field of silicon nitride.The method comprises the steps that silicon powder, a diluent and a catalyst are mixed according to a preset proportion, ethyl alcohol is used as a solvent, and a mixture is obtained; the preparation method comprises the following steps: carrying out ball-milling mixing on proportioned silicon powder, a diluent, a catalyst and a solvent in a ball mill through silicon nitride grinding balls to obtain slurry, and drying, cooling and sieving the slurry to obtain silicon-based precursor powder; the preparation method comprises the following steps: putting silicon-based precursor powder into a constant-temperature section of a tubular heating furnace, putting a mixture of melamine and polyvinyl chloride as an activating agent into a non-constant-temperature section, close to one side of an air inlet, of the tubular heating furnace, continuously introducing nitrogen into the tubular heating furnace, and reacting at a target temperature to obtain the silicon nitride powder. The quality of the silicon nitride powder can be improved.
本公开实施例提供了一种氮化硅粉体的制备方法及氮化硅粉体，涉及氮化硅技术领域，该方法包括：将硅粉、稀释剂与催化剂按预设比例进行配料，用乙醇作为溶剂，将配比好的硅粉、稀释剂、催化剂和溶剂在球磨机中通过氮化硅磨球进行球磨混合得到浆料，对所述浆料进行干燥、冷却以及过筛，获得硅基前驱体粉末；将硅基前驱体粉末置于管式加热炉的恒温段，将三聚氰胺与聚氯乙烯的混合物作为活化剂置于所述管式加热炉的靠近进气口一侧的非恒温段，向所述管式加热炉内持续通入氮气，在目标温度下进行反应，获得所述氮化硅粉体。本公开能够提高氮化硅粉体的质量。
Preparation method of silicon nitride powder and silicon nitride powder
氮化硅粉体的制备方法及氮化硅粉体
SHI YINGYING (Autor:in) / WANG ZHENG (Autor:in) / WANG LIANG (Autor:in) / DU PANPAN (Autor:in) / XUE GUOLIANG (Autor:in)
03.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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