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Interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic and preparation method thereof
The invention discloses an interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic. The interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic uses alumina fibrous fabric as a reinforcement and a silicon carbide ceramic as a matrix, and further, a sacrificial carbon interface phase is formed between the reinforcement and the matrix. A preparation method of the interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic comprises the following technical steps of first, putting the alumina fibrous fabric into a muffle furnace for carrying out high-temperature oxidation, and depositing a cracking carbon coating on the surface of the fibrous fabric by utilizing a chemical vapor deposition technique; preparing a precursor solution, carrying out vacuum impregnation on the fibrous fabric with the precursor solution, and completing one-time compaction and multi-time repeated compaction through low-temperature crosslinking and high-temperature ceramization, to prepare an alumina fibrous fabric reinforced silicon carbide ceramic including a cracking carbon interface phase; finally, sacrificing the cracking carbon interface phase through high-temperature heat treatment, to prepare a final product. The product provided by the invention is excellent in all mechanical property, antioxygenic property and high-temperature property, further, is short in preparation period and low in cost, and can be molded in a near-net-size manner.
Interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic and preparation method thereof
The invention discloses an interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic. The interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic uses alumina fibrous fabric as a reinforcement and a silicon carbide ceramic as a matrix, and further, a sacrificial carbon interface phase is formed between the reinforcement and the matrix. A preparation method of the interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic comprises the following technical steps of first, putting the alumina fibrous fabric into a muffle furnace for carrying out high-temperature oxidation, and depositing a cracking carbon coating on the surface of the fibrous fabric by utilizing a chemical vapor deposition technique; preparing a precursor solution, carrying out vacuum impregnation on the fibrous fabric with the precursor solution, and completing one-time compaction and multi-time repeated compaction through low-temperature crosslinking and high-temperature ceramization, to prepare an alumina fibrous fabric reinforced silicon carbide ceramic including a cracking carbon interface phase; finally, sacrificing the cracking carbon interface phase through high-temperature heat treatment, to prepare a final product. The product provided by the invention is excellent in all mechanical property, antioxygenic property and high-temperature property, further, is short in preparation period and low in cost, and can be molded in a near-net-size manner.
Interface-phase-including alumina fibrous fabric reinforced silicon carbide ceramic and preparation method thereof
LIU HAITAO (Autor:in) / CHENG HAIFENG (Autor:in) / WANG YI (Autor:in)
23.09.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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