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Method for preparing Si3N4/BAS composite ceramic material
The invention provides a method for preparing a Si3N4/BAS composite ceramic material. The method is characterized in that a silicon sol is used as a liquid phase for preparing slurry; silicon nitride powder, barium oxide powder, aluminum oxide powder, and few dispersing agents and adhesives are added, and the quantity of added barium oxide and aluminum oxide references to the mass of silicon dioxide in the silicon sol; the materials are added in stoichiometric ratio of BaO-Al2O3-2SiO2 to prepare the slurry; added barium oxide and aluminum oxide can absorb nano silicon dioxide in the silicon sol to generate BAS in a sintering process so as to prepare self-strengthening Si3N4/BAS composite ceramic material. According to the method, the preparation process is simple; the production cycle is short; the yield of the Si3N4/BAS composite ceramic material is high; the formed green body is high in strength and outstanding in uniformity.
Method for preparing Si3N4/BAS composite ceramic material
The invention provides a method for preparing a Si3N4/BAS composite ceramic material. The method is characterized in that a silicon sol is used as a liquid phase for preparing slurry; silicon nitride powder, barium oxide powder, aluminum oxide powder, and few dispersing agents and adhesives are added, and the quantity of added barium oxide and aluminum oxide references to the mass of silicon dioxide in the silicon sol; the materials are added in stoichiometric ratio of BaO-Al2O3-2SiO2 to prepare the slurry; added barium oxide and aluminum oxide can absorb nano silicon dioxide in the silicon sol to generate BAS in a sintering process so as to prepare self-strengthening Si3N4/BAS composite ceramic material. According to the method, the preparation process is simple; the production cycle is short; the yield of the Si3N4/BAS composite ceramic material is high; the formed green body is high in strength and outstanding in uniformity.
Method for preparing Si3N4/BAS composite ceramic material
YU JUANLI (author) / WANG TAO (author) / LYU YI (author) / ZHAO YINGMIN (author) / GUO SHIFENG (author) / PEI YUCHEN (author)
2015-04-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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