Chapter 47. Development of Si-M-C-(O) Tyranno Fiber Containing a Small Amount of Sol-Gel-Derived Oxide

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. K. Kumagawa,
  2. H. Yamaoka,
  3. M. Shibuya and
  4. T. Yamamura

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294680.ch47

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

How to Cite

Kumagawa, K., Yamaoka, H., Shibuya, M. and Yamamura, T. (2001) Development of Si-M-C-(O) Tyranno Fiber Containing a Small Amount of Sol-Gel-Derived Oxide, in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294680.ch47

Author Information

  1. Tyranno Fiber Development Project, Ube Industries, Ltd., Ube City 755–8633, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375730

Online ISBN: 9780470294680

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Keywords:

  • amorphous;
  • oxidation;
  • alumina;
  • stoichiometric;
  • alumina

Summary

Si-Zr-C-O-Zircon amorphous Tyranno Fiber (ZX) containing a small amount of sol-gel-derived zircon (5 - 20 %) has been produced. This Tyranno ZX has a better oxidation resistance in wet air at high temperature than those of current SiC-based continuous amorphous fibers (Tyranno ZMI and Hi-Nicalon). But the thermal conductivity of these SiC-based amorphous fibers is not sufficient for the CMC application, because the thermal shock resistance of the CMC using those low thermal conductivity is insufficient. Recently a nearly stoichiometric crystalline SiC-based Tyranno Fiber (SX) containing sol-gel-derived oxide material (alumina) as a sintered agent has just been developed. The precursor polymer of Tyranno SX was proposed by polymerizing the precursor polymer and additives of the sol-gel-derived alumina alcoholic solution. The production process of Tyranno SX from its precursor polymer was almost the same as that of nearly stoichiometric crystalline Tyranno Fiber (SA) that has a high thermal conductivity. The oxidation resistance of Tyranno SX in wet air at high temperature was improved with increasing alumina contents and its tensile strength was improved by the smaller ß -SiC crystallite size along with increasing alumina contents.