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A reactive infiltration processing of SiC/Fe–Si composites using preforms made of coked rice husks (RHs) and SiC powder in different ratios is reported, in which FeSi 2 alloy was used as infiltrant. The preforms were heat-treated at 1550°C for 6h prior to the infiltration. The coked RHs, which are composed of SiO 2 and C, were converted to SiC and poorly crystallized C by carbothermal...
SiC whisker reinfored carbide-based composites were fabricated by a reactive infiltration method by using Si as the infiltrate. Rice husks (RHs) were pyrolyzed to SiC whiskers, particles and amorphous carbon, and were then mixed with different contents of B 4 C as well as Mo powders. The mixtures were molded to porous preforms for the infiltration. The SiC whiskers and particles in the preform...
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