[Retracted] A Comparative Study on Crack-Healing Ability of Al₂O₃/SiC Structural Ceramic Composites Synthesized by Microwave Sintering and Conventional Electrical Sintering

Figure 2

SEM figures of conventional electrical sintered Al₂O₃/xwt.% SiC samples: (a) 5 wt. %SiC; (b) 10 wt.%SiC; (c) 15 wt.%SiC; (d) 20 wt.%SiC.