Effect of Fabrication Process on Internal Friction and Elastic Modulus of SiC/SiC Composites

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Silicon carbide (SiC) based fiber reinforced SiC composites have been fabricated by various methods which are, for example, polymer impregnation and pyrolysis (PIP), hot press (HP) and chemical vapor infiltration (CVI) processes. It is also well known that there are many differences in the density, the elastic modulus and the strength of composites made by those methods. In this paper, the effect of fabrication process on the internal friction and elastic modulus of SiC/SiC composites was studied. From the temperature dependences of internal friction and elastic modulus of composites made by PIP, HP and CVI processes, a suitable method to make the high-damping SiC-based composite with a good elastic property is considered to be the CVI process. In the case of the composite produced by the CVI process at 1323 K, a stable peak of internal friction due to the grain boundary relaxation was obtained at about 1200 K. The temperature of this peak moved to the lower side after heat treatment at 1773 K. Also, it was found that the peak was not affected by the property of the SiC based fiber but by the microstructure of the matrix.

収録刊行物

  • Transactions of JWRI

    Transactions of JWRI 34 (1), 125-130, 2005-07

    大阪大学接合科学研究所

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詳細情報 詳細情報について

  • CRID
    1390294252778550400
  • NII論文ID
    120004845294
  • NII書誌ID
    AA00867058
  • DOI
    10.18910/11106
  • HANDLE
    11094/11106
  • ISSN
    03874508
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • IRDB
    • CiNii Articles

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