Publisher : The Korea Association of Crystal Growth
DOI : 10.6111/JKCGCT.2016.26.2.062
Title & Authors
Characterization of crack self-healing of silicon carbide by hot press sintering Kim, Seong-Hoon; Kim, Kyung-Hun; Dow, Hwan-Soo; Park, Joo-Seok; Kim, Kyung-Ja; Shim, Kwang-Bo;
In this study, it was investigated that characteristic of crack-self-healing of hot-pressed SiC. SiC ceramics was sintered with and sintering additive by hot press. Sintering was performed in hot-press furnace in flowing argon (Ar), holding for 3 hr under and 50 MPa. The sintered SiC was machined into 3-point bending strength specimen of , and introduced pre-crack by Vickers indentation at 49.6 N. Specimens were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), 3-point bending strength after heat treatment at for 1~10 hr. The best crack-self-healing ability was achieved 770 MPa 3-point bending strength by heat treatment at for 5 hr.
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