Fabrication of Carbon Fiber-Reinforced hBN Composites

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  • MATSUO Yohtaro
    Department of Inorganic Material, Faculty of Engineering, Tokyo Institute of Technology
  • KIM Sangdong
    Department of Inorganic Material, Faculty of Engineering, Tokyo Institute of Technology
  • YASUDA Kouichi
    Department of Inorganic Material, Faculty of Engineering, Tokyo Institute of Technology
  • OHSAWA Shigenari
    Department of Inorganic Material, Faculty of Engineering, Tokyo Institute of Technology
  • KIMURA Shiushichi
    Department of Inorganic Material, Faculty of Engineering, Tokyo Institute of Technology

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  • 炭素繊維強化hBN系複合材の作製
  • タンソ センイ キョウカ hBNケイ フクゴウザイ ノ サクセイ

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Abstract

Unidirectional carbon fiber-reinforced hBN composites were fabricated by a filament winding technique, followed by hot-pressing at 1900°C, 30MPa for 1h in N2 atmosphere. An hBN powder containing 8 wt% oxygen and a high-purity hBN powder admixed with 30 wt% Al2O3 were used as starting powders. The bending strength of hBN composites and monolithic hBN was evaluated by three-point bending test. The strength of hBN composites was twenty-five times and six times larger than that of monolithic hBN (B2O3) and hBN (Al2O3), respectively. The hBN composites exhibited typical fracture behavior of fiber-reinforced composites.

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