Chapter 12. Thermal Stability and Chemical Corrosion Resistance of Newly Developed Continuous Si-Zr-C-O Tyranno Fiber

  1. J. P. Singh
  1. Kiyoshi Kumagawa,
  2. Hiroyuki Yamaoka,
  3. Masaki Shibuya and
  4. Takemi Yamamura

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch12

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

How to Cite

Kumagawa, K., Yamaoka, H., Shibuya, M. and Yamamura, T. (1997) Thermal Stability and Chemical Corrosion Resistance of Newly Developed Continuous Si-Zr-C-O Tyranno Fiber, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294437.ch12

Author Information

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

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375495

Online ISBN: 9780470294437

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Keywords:

  • continuous inorganic fiber;
  • additives;
  • zirconium complex;
  • thermal stability;
  • oxidation resistance

Summary

A new continuous inorganic fiber, Si-Zr-C-O fiber, containing zirconium instead of titanium (Si-Ti-C-O fiber), has been successfully developed. This new Si-Zr-C-O fiber exhibits improved thermal stability and chemical corrosion resistance and has a decreased oxygen content. This reduction in oxygen content of Si-Zr-C-O fiber can be achieved by changing additives, from titanium alkoxide to a zirconium complex during the polymerization process of the precursor polymer. Continuous Si-Zr-C-O fiber “ZM” and “improved ZM” produced by oxidation curing had oxygen contents of 10 and 7.6 wt%, respectively. The oxygen content of “ZE” produced by electron beam curing was reduced to 1.7 wt%. The thermal stability and oxidation resistance of both ZM fiber and improved ZM fiber were superior to those of Si-Ti-C-O fiber (LoxE) produced by electron beam curing which has an oxygen content of only 5wt%. The crystalline grain growth of ZM fiber up to 1773 K for 1 hour in argon gas and the level of decomposition of ZM fiber during heat treatment in CO gas at 1773K for 3 hours were very low in comparison with those of LoxM fiber (Si-Ti-C-O) by oxidation curing and LoxE fiber. Furthermore, concerning chemical corrosion resistance, when ZM and LoxM fibers were immersed in salt(NaCl) water and then heat treated at 1273K in air for 2 hours, LoxM fiber containing titanium was considerably damaged, but ZM fiber exhibited minimal damage.