Characterization of crack self-healing of silicon carbide by hot press sintering (열간가압소결법으로 제조한 탄화규소의 균열자기치유 특성)

Seong-Hoon Kim (김성훈); Kyounghun Kim (김경훈); Hwan-Soo Dow (도환수); Park Joo-Soek (박주석); Kyung-Ja Kim (김경자); Kwang Bo Shim (심광보)

doi:10.6111/JKCGCT.2016.26.2.062

Characterization of crack self-healing of silicon carbide by hot press sintering

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2016, 26(2), pp.62-66
DOI : 10.6111/JKCGCT.2016.26.2.062
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : March 31, 2016
Accepted : April 19, 2016
Published : April 30, 2016

Seong-Hoon Kim ¹, Kyounghun Kim ¹, Hwan-Soo Dow ¹, Park Joo-Soek ¹, Kyung-Ja Kim ¹, Kwang Bo Shim ²

¹한국세라믹기술원
²한양대학교

Accredited

ABSTRACT

In this study, it was investigated that characteristic of crack-self-healing of hot-pressed SiC. SiC ceramics was sintered with Al2O3 and Y2O3 sintering additive by hot press. Sintering was performed in hot-press furnace in flowing argon (Ar), holding for 3 hr under 1950 o C and 50 MPa. The sintered SiC was machined into 3-point bending strength specimen of 3 × 4 × 40 mm, 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 1200~1400 o C for 1~10 hr. The best crack-self-healing ability was achieved 770 MPa 3-point bending strength by heat treatment at 1300 o C for 5 hr.

KEYWORDS

Silicon carbide, Silicon oxide, Crack-self-healing, Hot press, Oxidation

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* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Characterization of crack self-healing of silicon carbide by hot press sintering

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Characterization of crack self-healing of silicon carbide by hot press sintering

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