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Ceramic Matrix Composites: SiC Whisker–Reinforced

  1. Wataru Nakao

Published Online: 15 SEP 2011

DOI: 10.1002/9781118097298.weoc032

Wiley Encyclopedia of Composites

Wiley Encyclopedia of Composites

How to Cite

Nakao, W. 2011. Ceramic Matrix Composites: SiC Whisker–Reinforced. Wiley Encyclopedia of Composites. 1–6.

Author Information

  1. Yokohama National University, Yokohama, Japan

Publication History

  1. Published Online: 15 SEP 2011

Abstract

SiC-whisker-reinforced ceramic exhibits much higher fracture toughness than monolithic ceramics, because the whisker bridging and pullout provide much large fracture resistance when the crack propagates perpendicular to the longitudinal direction of the SiC whiskers. Owing to the toughening efficiency and the ease of processing, SiC whisker reinforcements have been employed not only for conventional ceramics such as alumina and silicon nitride but also for advanced ceramics such as zirconium diboride. Furthermore, SiC-whisker-reinforced ceramic matrix composites possess self-healing ability driven by the SiC whisker oxidation and the insulating electrical properties due to the SiC-whisker-interconnecting network. These features are expected to extend its applications. In this article, these mechanisms are overviewed and introduced in detail.

Keywords:

  • fracture toughness;
  • fiber reinforcement;
  • self-healing;
  • electric conductivity