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Gelcasting forming method of Si3N4 porous ceramic
The invention relates to a gelcasting forming method of Si3N4 porous ceramic. Si3N4 micro powder, a sintering aid organic monomer and cross-linking agent are fully mixed and subjected to ball milling in deionized water, the obtained mixture generates crosslinking under a certain catalytic action after being injected into a mold, a three-dimensional reticular structure is formed so as to cause slurry to be subjected to in-situ curing forming, and a Si3N4 green body with a complex shape can be obtained. Through a method that the addition of the organic monomer is improved to decompose and generate small holes at a high temperature, a porous structure is formed. The Si3N4 porous ceramic prepared by the method has the advantages of high porosity, small aperture, evenly-distributed aperture and the like.
Gelcasting forming method of Si3N4 porous ceramic
The invention relates to a gelcasting forming method of Si3N4 porous ceramic. Si3N4 micro powder, a sintering aid organic monomer and cross-linking agent are fully mixed and subjected to ball milling in deionized water, the obtained mixture generates crosslinking under a certain catalytic action after being injected into a mold, a three-dimensional reticular structure is formed so as to cause slurry to be subjected to in-situ curing forming, and a Si3N4 green body with a complex shape can be obtained. Through a method that the addition of the organic monomer is improved to decompose and generate small holes at a high temperature, a porous structure is formed. The Si3N4 porous ceramic prepared by the method has the advantages of high porosity, small aperture, evenly-distributed aperture and the like.
Gelcasting forming method of Si3N4 porous ceramic
JIA LIUKUAN (author) / HAN JIANLE (author)
2016-02-03
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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