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Reactive sintering method for preparing magnesia alumina spinel
The invention discloses a reactive sintering method for preparing magnesia alumina spinel, which is characterized by comprising the following steps: heating a dry green compact to 1250-1550 DEG C in a resistance furnace at the rate of 4-16 DEG C/minute, and keeping the temperature for 0.5-16 hours; heating to 1550-1750 DEG C at the rate of 4-16 DEG C/minute, and keeping the temperature for not more than 1.5 hours; and cooling to 1300-1600 DEG C at the rate of 10-70 DEG C/minute, keeping the temperature for 0.5-16 hours, and naturally cooling to room temperature to obtain the uniform-microstructure high-density magnesia alumina spinel. The method is beneficial to lowering the sintering temperature and shortening the holding time at high temperature, thereby lowering the energy consumption. The method improves the microstructure of the magnesia alumina spinel ceramic material, and enhances the mechanical properties of the magnesia alumina spinel ceramic material. The method improves the melt permeation resistance and corrosion resistance of the magnesia alumina spinel.
Reactive sintering method for preparing magnesia alumina spinel
The invention discloses a reactive sintering method for preparing magnesia alumina spinel, which is characterized by comprising the following steps: heating a dry green compact to 1250-1550 DEG C in a resistance furnace at the rate of 4-16 DEG C/minute, and keeping the temperature for 0.5-16 hours; heating to 1550-1750 DEG C at the rate of 4-16 DEG C/minute, and keeping the temperature for not more than 1.5 hours; and cooling to 1300-1600 DEG C at the rate of 10-70 DEG C/minute, keeping the temperature for 0.5-16 hours, and naturally cooling to room temperature to obtain the uniform-microstructure high-density magnesia alumina spinel. The method is beneficial to lowering the sintering temperature and shortening the holding time at high temperature, thereby lowering the energy consumption. The method improves the microstructure of the magnesia alumina spinel ceramic material, and enhances the mechanical properties of the magnesia alumina spinel ceramic material. The method improves the melt permeation resistance and corrosion resistance of the magnesia alumina spinel.
Reactive sintering method for preparing magnesia alumina spinel
LYU XIAOJUN (Autor:in) / LIU JIANHUA (Autor:in) / LI JIE (Autor:in) / LAI YANQING (Autor:in)
08.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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