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

Figure 4

XRD pattern of Al₂O₃/x wt.% SiC: (a) conventional electrical sintered sample; (b) microwave sintered sample; (c) crack-healed conventional electrical sintered sample; (d) crack-healed microwave sintered sample.

(a)

(b)

(c)

(d)