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Composite ceramic material and inner container of electric cooker prepared from composite ceramic material
The invention discloses a composite ceramic material and an inner container of an electric cooker prepared from the composite ceramic material. The composite ceramic material is prepared from the following components in parts by weight: 3-8 parts of barium carbonate, 20-35 parts of calcite, 5-10 parts of kaolin, 35-55 parts of silica powder, 3-8 parts of potassium nitrate, 10-15 parts of paraffin, 3-8 parts of sodium carbonate, 7-8 parts of boric acid, 11-15 parts of quartz, 50-75 parts of aluminum nitride powder, 2-3 parts of yttrium oxide and 3-5 parts of lanthanum oxide, wherein the aluminum nitride powder is generated by reacting aluminum oxide powder serving as an aluminum source and carbon black powder in the flowing nitrogen atmosphere at the temperature of 1500-1700 DEG C; calcium oxide is added as a catalyst in the reaction process, and decarbonization is carried out in dry air with the temperature of 700-800 DEG C after the reaction is finished; the mass content of cation impurities in the aluminum oxide powder is lower than or equal to 0.02%, and the mass contents of silicon and iron impurities are respectively lower than 0.001%; and the average particle size of the carbon black powder is 35-40nm, and the specific surface area is smaller than or equal to 90m<2>/g.
Composite ceramic material and inner container of electric cooker prepared from composite ceramic material
The invention discloses a composite ceramic material and an inner container of an electric cooker prepared from the composite ceramic material. The composite ceramic material is prepared from the following components in parts by weight: 3-8 parts of barium carbonate, 20-35 parts of calcite, 5-10 parts of kaolin, 35-55 parts of silica powder, 3-8 parts of potassium nitrate, 10-15 parts of paraffin, 3-8 parts of sodium carbonate, 7-8 parts of boric acid, 11-15 parts of quartz, 50-75 parts of aluminum nitride powder, 2-3 parts of yttrium oxide and 3-5 parts of lanthanum oxide, wherein the aluminum nitride powder is generated by reacting aluminum oxide powder serving as an aluminum source and carbon black powder in the flowing nitrogen atmosphere at the temperature of 1500-1700 DEG C; calcium oxide is added as a catalyst in the reaction process, and decarbonization is carried out in dry air with the temperature of 700-800 DEG C after the reaction is finished; the mass content of cation impurities in the aluminum oxide powder is lower than or equal to 0.02%, and the mass contents of silicon and iron impurities are respectively lower than 0.001%; and the average particle size of the carbon black powder is 35-40nm, and the specific surface area is smaller than or equal to 90m<2>/g.
Composite ceramic material and inner container of electric cooker prepared from composite ceramic material
WU JINNING (author) / YANG GUANGLIANG (author)
2015-11-25
Patent
Electronic Resource
English
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