Al₂O₃/SiC composite ceramics were sintered to evaluate the bending strength and behavior of crack healing. The three-point bending test was carried out under room temperature. The crack healing behavior was investigated from 1373 K to 1723 K. The ...
Al₂O₃/SiC composite ceramics were sintered to evaluate the bending strength and behavior of crack healing. The three-point bending test was carried out under room temperature. The crack healing behavior was investigated from 1373 K to 1723 K. The bending strength of Al₂O₃/SiC composite by nanocomposite is higher than that of Al₂O₃ monolithic. Crack-healing behavior was depended on an amount of additive powder Y₂O₃. In Al₂O₃/SiC composite ceramics with 3 wt. % Y₂O₃ for additive powder, the bending strength at 1573 K is about 100% increase than that of the smooth specimens. The strength of Al₂O₃/SiC composite ceramics was a little higher than those of Al₂O₃ monolithic.