Method for preparing silicon carbide ceramic
A technology of silicon carbide ceramics and ceramic materials is applied in the field of preparation of silicon carbide ceramics, which can solve the problems of not using high-performance ceramic materials of bamboo charcoal, and achieve the effects of improving the synthesis speed and increasing the reaction area.
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[0015] Bamboo charcoal-based carbide ceramic is a carbide material obtained by sintering at high temperature by simulating bamboo biological structure. The bamboo material is carbonized under anaerobic conditions to obtain a carbon skeleton with bamboo pore structure, and processed into a powder form, which is used as a biological template for the infiltration and reaction of the ceramic phase. Through the infiltration and sintering reaction of metal or inorganic non-metallic substances, the result is Ceramics have the fine structure of bamboo. According to the reaction formula of Si+C→SiC, a method for preparing silicon carbide ceramics of the present invention is specifically as follows: first solid-phase sintering is used, bamboo charcoal is pulverized and ground, and then mixed with silicon powder at a mass ratio of 1:3, and then the unit The weight (g) of silicon-carbon mixture and the unit volume (ml) of phenolic resin are mixed uniformly at a ratio of 1:1; the above-mention...
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