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In the present study, porous silicon carbide (SiC) was prepared by mixing coarse SiC particles with a small amount of sodium silicate. The firing was then carried out at 1000°C in air for 10min. Though the resulting porosity is as high as 40%, the thermal conductivity of the porous SiC reached 19W/mK, with the flexural strength reaching 20MPa. The sodium silicate formed a strong bond between SiC particles;...
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