Microstructure and mechanical properties of B4C-SiC composites (탄화붕소-탄화규소 복합체의 미세구조와 기계적 특성)

Seong Min So (소성민); Kyounghun Kim (김경훈); Park Joo-Soek (박주석); Min Suk Kim (김민숙); HyungSun Kim (김형순)

doi:10.6111/JKCGCT.2019.29.6.338

Microstructure and mechanical properties of B4C-SiC composites

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2019, 29(6), pp.338~344
DOI : 10.6111/JKCGCT.2019.29.6.338
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : November 19, 2019
Accepted : December 12, 2019
Published : December 31, 2019

Seong Min So ¹, Kyounghun Kim ¹, Park Joo-Soek ¹, Min Suk Kim ², HyungSun Kim ³

¹한국세라믹기술원
²인하대학교 신소재공학과
³인하대학교

Accredited

ABSTRACT

B4C-SiC composites were fabricated using hot press sintering method without sintering additives at 1,900~2,000° Cunder a pressure of 40 MPa. The crystal phase, relative density, microstructure, and mechanical properties of B4C-SiC composites were evaluated. When B4C and SiC were uniformly dispersed in the composite, grain growth was inhibited, and a sintered body with a fine and uniform microstructure, with improved mechanical properties, was fabricated. The relative density of B4C-SiC composites sintered under 2,000°C of temperature and 40 MPa of pressure was over 99.8 %, and the bending strength and Vicker’s hardness at 50 wt% of B4C were 645 MPa and 30.6 GPa, respectively.

KEYWORDS

B4C, SiC, Composite, Hot press sintering, Microstructure, Mechanical properties

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Microstructure and mechanical properties of B4C-SiC composites

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Journal of the Korean Crystal Growth and Crystal Technology 2025 KCI Impact Factor : 0.14 KCI-WoS Impact Factor : 0.45

Microstructure and mechanical properties of B4C-SiC composites

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