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Method for preparing one-way through porous silicon carbide-silicon ceramic material
The invention relates to a method for preparing a one-way porous silicon carbide-silicon ceramic material and belongs to the technical field of ceramic filter element materials. The preparing method specifically comprises the steps of 1, preparing a carbon fiber winding glue solution; 2, winding carbon fiber; 3, curing wound carbon fiber to obtain a carbon fiber prefabricated member; 4, conducting high-temperature carbonization on the carbon fiber prefabricated member to generate a carbon fiber reinforced carbon substrate blank (C/C blank); 5, conducting siliconizing reaction on the C/C blank to generate a carbon-silicon carbide-silicon composite material; 6, oxidizing the carbon-silicon carbide-silicon composite material to generate the one-way porous silicon carbide-silicon ceramic material. According to the method, high-temperature liquid-phase siliconizing is conducted on a C/C composite material to generate a prefabricated body with carbon fiber, a one-way porous structure is formed after carbon fiber is oxidized and burnt off, the average pore size of the finally obtained one-way porous silicon carbide-silicon ceramic material is 1-5 microns, and pore size distribution is uniform.
Method for preparing one-way through porous silicon carbide-silicon ceramic material
The invention relates to a method for preparing a one-way porous silicon carbide-silicon ceramic material and belongs to the technical field of ceramic filter element materials. The preparing method specifically comprises the steps of 1, preparing a carbon fiber winding glue solution; 2, winding carbon fiber; 3, curing wound carbon fiber to obtain a carbon fiber prefabricated member; 4, conducting high-temperature carbonization on the carbon fiber prefabricated member to generate a carbon fiber reinforced carbon substrate blank (C/C blank); 5, conducting siliconizing reaction on the C/C blank to generate a carbon-silicon carbide-silicon composite material; 6, oxidizing the carbon-silicon carbide-silicon composite material to generate the one-way porous silicon carbide-silicon ceramic material. According to the method, high-temperature liquid-phase siliconizing is conducted on a C/C composite material to generate a prefabricated body with carbon fiber, a one-way porous structure is formed after carbon fiber is oxidized and burnt off, the average pore size of the finally obtained one-way porous silicon carbide-silicon ceramic material is 1-5 microns, and pore size distribution is uniform.
Method for preparing one-way through porous silicon carbide-silicon ceramic material
HUANG XIANGDONG (author) / LING YIHUI (author) / LUO JIAWEI (author)
2016-02-10
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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