Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of aluminum nitride powder and aluminum nitride powder
The invention relates to a preparation method of aluminum nitride powder and the aluminum nitride powder thereof.The preparation method comprises the steps that a mixture of first melamine, an auxiliary agent and a formaldehyde aqueous solution is dissolved in deionized water to obtain a first solution, and water-soluble inorganic aluminum salt is dissolved in deionized water to obtain a second solution; pouring the second solution and ammonia water into the first solution to obtain gel, and freeze-drying the gel to obtain a melamine-formaldehyde/aluminum hydroxide precursor; spreading the melamine-formaldehyde/aluminum hydroxide precursor in a graphite crucible, placing the graphite crucible in a constant-temperature area of a corundum tubular furnace, spreading second melamine in the corundum crucible, placing the corundum crucible at an air inlet to ensure that the second melamine is gradually decomposed, and carrying out high-temperature carbon thermal reduction reaction to obtain a mixture of carbon and aluminum nitride; and carrying out decarburization treatment on the mixture to obtain the aluminum nitride powder. The preparation efficiency of the aluminum nitride powder can be improved, and the performance of the aluminum nitride powder is improved.
本公开是关于一种氮化铝粉体的制备方法及其氮化铝粉体，该制备方法包括：将第一三聚氰胺、辅助剂、甲醛水溶液的混合物溶解在去离子水中，得到第一溶液，并将水溶性无机铝盐溶解在去离子水中，得到第二溶液；将所述第二溶液以及氨水倒入第一溶液中以得到凝胶，将凝胶进行冷冻干燥后得到三聚氰胺‑甲醛/氢氧化铝前驱体；将三聚氰胺‑甲醛/氢氧化铝前驱体平铺在石墨坩埚内并置于刚玉管式炉的恒温区，将第二三聚氰胺平铺在刚玉坩埚内并置于进气口处，以保证第二三聚氰胺逐步分解，并进行高温碳热还原反应，得到碳与氮化铝的混合物；对所述混合物进行脱碳处理，得到所述氮化铝粉体。本公开能够提高氮化铝粉体的制备效率，提高氮化铝粉体的性能。
Preparation method of aluminum nitride powder and aluminum nitride powder
The invention relates to a preparation method of aluminum nitride powder and the aluminum nitride powder thereof.The preparation method comprises the steps that a mixture of first melamine, an auxiliary agent and a formaldehyde aqueous solution is dissolved in deionized water to obtain a first solution, and water-soluble inorganic aluminum salt is dissolved in deionized water to obtain a second solution; pouring the second solution and ammonia water into the first solution to obtain gel, and freeze-drying the gel to obtain a melamine-formaldehyde/aluminum hydroxide precursor; spreading the melamine-formaldehyde/aluminum hydroxide precursor in a graphite crucible, placing the graphite crucible in a constant-temperature area of a corundum tubular furnace, spreading second melamine in the corundum crucible, placing the corundum crucible at an air inlet to ensure that the second melamine is gradually decomposed, and carrying out high-temperature carbon thermal reduction reaction to obtain a mixture of carbon and aluminum nitride; and carrying out decarburization treatment on the mixture to obtain the aluminum nitride powder. The preparation efficiency of the aluminum nitride powder can be improved, and the performance of the aluminum nitride powder is improved.
本公开是关于一种氮化铝粉体的制备方法及其氮化铝粉体，该制备方法包括：将第一三聚氰胺、辅助剂、甲醛水溶液的混合物溶解在去离子水中，得到第一溶液，并将水溶性无机铝盐溶解在去离子水中，得到第二溶液；将所述第二溶液以及氨水倒入第一溶液中以得到凝胶，将凝胶进行冷冻干燥后得到三聚氰胺‑甲醛/氢氧化铝前驱体；将三聚氰胺‑甲醛/氢氧化铝前驱体平铺在石墨坩埚内并置于刚玉管式炉的恒温区，将第二三聚氰胺平铺在刚玉坩埚内并置于进气口处，以保证第二三聚氰胺逐步分解，并进行高温碳热还原反应，得到碳与氮化铝的混合物；对所述混合物进行脱碳处理，得到所述氮化铝粉体。本公开能够提高氮化铝粉体的制备效率，提高氮化铝粉体的性能。
Preparation method of aluminum nitride powder and aluminum nitride powder
氮化铝粉体的制备方法及氮化铝粉体
WANG ZHENG (Autor:in) / SHI YINGYING (Autor:in) / WANG LIANG (Autor:in) / DU PANPAN (Autor:in)
01.11.2024
Patent
Elektronische Ressource
Chinesisch
Preparation method of aluminum nitride powder and aluminum nitride powder
| Europäisches Patentamt | 2024