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Alumina fiber fabric-reinforced silicon carbide ceramic and preparation method thereof
The invention discloses alumina fiber fabric-reinforced silicon carbide ceramic. An alumina fiber fabric serves as a reinforcement body, silicon carbide ceramic serves as a base body, and the alumina fiber fabric-reinforced silicon carbide ceramic is mainly prepared by using a chemical gas-phase permeation process for multiple times. A preparation method specifically comprises the following steps: preparing the alumina fiber fabric with a corresponding structure by using a knitting process, and then oxidizing the alumina fiber fabric in a muffle furnace for certain time at high temperature; by using the obtained alumina fiber fabric as the reinforcement body and using trichloromethyl silane-hydrogen-argon as raw materials, preparing an Al2O3f/SiC ceramic blank by using a chemical gas-phase permeation method; machining the surface of the ceramic blank, and changing a great number of closed holes in the surface into open holes; performing subsequent compacting treatment on the ceramic blank by using the chemical gas-phase permeation method to obtain the alumina fiber fabric-reinforced silicon carbide ceramic finally. The room-temperature and high-temperature mechanical properties of the alumina fiber fabric-reinforced silicon carbide ceramic are excellent, the preparation period is short, the cost is low, and clear dimension molding can be achieved.
Alumina fiber fabric-reinforced silicon carbide ceramic and preparation method thereof
The invention discloses alumina fiber fabric-reinforced silicon carbide ceramic. An alumina fiber fabric serves as a reinforcement body, silicon carbide ceramic serves as a base body, and the alumina fiber fabric-reinforced silicon carbide ceramic is mainly prepared by using a chemical gas-phase permeation process for multiple times. A preparation method specifically comprises the following steps: preparing the alumina fiber fabric with a corresponding structure by using a knitting process, and then oxidizing the alumina fiber fabric in a muffle furnace for certain time at high temperature; by using the obtained alumina fiber fabric as the reinforcement body and using trichloromethyl silane-hydrogen-argon as raw materials, preparing an Al2O3f/SiC ceramic blank by using a chemical gas-phase permeation method; machining the surface of the ceramic blank, and changing a great number of closed holes in the surface into open holes; performing subsequent compacting treatment on the ceramic blank by using the chemical gas-phase permeation method to obtain the alumina fiber fabric-reinforced silicon carbide ceramic finally. The room-temperature and high-temperature mechanical properties of the alumina fiber fabric-reinforced silicon carbide ceramic are excellent, the preparation period is short, the cost is low, and clear dimension molding can be achieved.
Alumina fiber fabric-reinforced silicon carbide ceramic and preparation method thereof
LIU HAITAO (author) / CHENG HAIFENG (author) / WANG YI (author)
2015-09-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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