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J. Korean Ceram. Soc. > Volume 29(8); 1992 > Article
Journal of the Korean Ceramic Society 1992;29(8): 617.
MDF 시멘트-SiC 위스커 복합재료의 미세구조적 특성
김태현, 최상흘
한양대학교 무기재료공학과
Microstructural Characterization of MDF Cement-SiC Whisker Composites
ABSTRACT
In order to study on the effect of SiC whisker in flexural strength characterization of macro defect-free (MDF) cement composites, which composed of high alumina cement and polyvinyl alcohol, microstructural characterization of the composite specimens fabricated by the addition of SiC whiskers was investigated. Microproes are created around the SiC whisker, MDF cement didn't react with the SiC whisker. However, flexural strength of the composites have been improved. Fracture morphology of the composites, presents mainly intergranular type fracture passing around the unhydrated particles and siC whiskers, and partially transgranular type fracture. The main strengthening mechanisms of the MDF cement composites reinforced with SiC whiskers are characterized by crack deflection, microcracking, and bridging of cracks.
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