Method for preparing bulk ceramic material from iron-silicon nitride powder: Fid-Bau Portal

Method for preparing bulk ceramic material from iron-silicon nitride powder

GUAN JIASUO

The invention discloses a method for preparing a bulk ceramic material from iron-silicon nitride powder. The method comprises the following steps: firstly, placing a raw material in a ball mill and carrying out ball milling by virtue of a wet balling method, uniformly mixing and drying the ball-milled and uniformly mixed material to obtain mixed power; secondly, placing the mixed power in a hydraulic press and carrying out pre-press molding and placing the mixed power in a cold isostatic press for carrying out cold isostatic pressing to obtain a green body; and thirdly, placing the green body in a gas pressure sintering furnace for carrying out gas pressure sintering and cooling in the furnace to obtain the bulk ceramic material. According to the method, by virtue of the technological processes of uniformly mixing the raw material by virtue of the wet balling method to obtain the mixed powder and carrying out pre-press molding and cold isostatic pressing on the mixed powder to obtain the green body in combination with the gas pressure sintering, the bulk ceramic material with low porosity and large bulk density is prepared and the bulk ceramic material has the advantages of excellent high-temperature resistance and mechanical properties and can be used as a structural part ceramic to prepare kiln furniture or other refractory materials for high-temperature kilns.

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