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Aluminum silicate fiber reinforced oxide ceramic containing interface phase and preparation method thereof
The invention relates to aluminum silicate fiber reinforced oxide ceramic containing an interface phase. The aluminum silicate fiber reinforced oxide ceramic adopts one or a mixture of more of mullite, aluminum silicate and aluminum oxide as a ceramic substrate and adopts aluminum silicate fiber as a reinforcing phase, and a sacrifice carbon interface phase is formed between the substrate and the reinforced phase. The preparation method of the aluminum silicate fiber reinforced oxide ceramic comprises the following steps: preparing a three-dimensional aluminum silicate fiber fabric, and preparing a pyrolytic carbon coating on the surface of the fiber fabric by utilizing a chemical vapor phase deposition process; taking oxide sol as a precursor, vacuum impregnating the fiber fabric, carrying out the gelatization, then carrying out the high-temperature ceramization, and completing the primary compacting process; repeating compacting for at least 10 times; finally carrying out oxidative cracking on carbon interface phase coating, forming a gap between the aluminum silicate fiber and the substrate, and preparing the product. The product is excellent in mechanical property both at the room temperature and high temperature and has the advantages of short preparation period, low cost, wide applicability and the like.
Aluminum silicate fiber reinforced oxide ceramic containing interface phase and preparation method thereof
The invention relates to aluminum silicate fiber reinforced oxide ceramic containing an interface phase. The aluminum silicate fiber reinforced oxide ceramic adopts one or a mixture of more of mullite, aluminum silicate and aluminum oxide as a ceramic substrate and adopts aluminum silicate fiber as a reinforcing phase, and a sacrifice carbon interface phase is formed between the substrate and the reinforced phase. The preparation method of the aluminum silicate fiber reinforced oxide ceramic comprises the following steps: preparing a three-dimensional aluminum silicate fiber fabric, and preparing a pyrolytic carbon coating on the surface of the fiber fabric by utilizing a chemical vapor phase deposition process; taking oxide sol as a precursor, vacuum impregnating the fiber fabric, carrying out the gelatization, then carrying out the high-temperature ceramization, and completing the primary compacting process; repeating compacting for at least 10 times; finally carrying out oxidative cracking on carbon interface phase coating, forming a gap between the aluminum silicate fiber and the substrate, and preparing the product. The product is excellent in mechanical property both at the room temperature and high temperature and has the advantages of short preparation period, low cost, wide applicability and the like.
Aluminum silicate fiber reinforced oxide ceramic containing interface phase and preparation method thereof
CHENG HAIFENG (Autor:in) / LIU HAITAO (Autor:in) / WANG YI (Autor:in) / WANG JUN (Autor:in)
23.09.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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