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1993•Journal of the Ceramic Society of JapanOpen access

Mechanical Properties of SiC Whisker-Reinforced TiB2 Composites Fabricated by Hot-Pressing

Akira Kamiya, Kikuo Nakano

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Abstract

SiC whisker reinforced TiB2 matrix composites containing 10 to 30vol% whisker were prepared by hotpressing at 1600 to 1900°C. The flexural strength of 867±77MPa and KIC of 5.8±0.12MPa√m were obtained for the 1800°C hot-pressed samples containing 10vol% whisker. No significant increase in KIC was observed by the whisker reinforcement because of the chemical reaction between matrix and whisker, which enhanced strong interfacial bonding and whisker agglomeration.

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SiC whisker reinforced TiB2 matrix composites containing 10 to 30vol% whisker were prepared by hotpressing at 1600 to 1900°C. The flexural strength of 867±77MPa and KIC of 5.8±0.12MPa√m were obtained for the 1800°C hot-pressed samples containing 10vol% whisker. No significant increase in KIC was observed by the whisker reinforcement because of the chemical reaction between matrix and whisker, which enhanced strong interfacial bonding and whisker agglomeration.

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Available abstract

SiC whisker reinforced TiB2 matrix composites containing 10 to 30vol% whisker were prepared by hotpressing at 1600 to 1900°C. The flexural strength of 867±77MPa and KIC of 5.8±0.12MPa√m were obtained for the 1800°C hot-pressed samples containing 10vol% whisker. No significant increase in KIC was observed by the whisker reinforcement because of the chemical reaction between matrix and whisker, which enhanced strong interfacial bonding and whisker agglomeration.

Key concepts: Whisker, Materials science, Composite material, Hot pressing, Flexural strength, Reinforcement, Monocrystalline whisker, Pressing

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