Effect of Modifying Additives on the Sintering and Properties of SiC/SiCw Ceramic Composite Material

详细

Spark plasma sintering and hot compaction methods were used to obtain experimental samples of a composite material of the SiC‒SiC_w system with various modifying additives (AlN, B₄C, HfB₂, Y₂O₃, Al₂O₃, Si₃N₄). The effect of the modifying additives on the sintering process, physicomechanical, and thermal properties of the ceramic composite material was examined. The introduction of the modifying additives lowered the sintering temperature of silicon carbide produced by the hot compaction method by 200°C and that formed with spark plasma spark sintering by 300‒450°C as compared with the sintering temperature of silicon carbide without additives.