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Preparation of refractory carbide fibers by thermal decomposition of transition metal (Ti, Zr, Hf, Nb, Ta) alkoxide-cellulose precursor gel fibers

Published online by Cambridge University Press:  31 January 2011

Y. Kurokawa ,
S. Kobayashi ,
M. Suzuki ,
M. Shimazaki  and
M. Takahashi
Y. Kurokawa
Affiliation:
Faculty of Engineering, Tohoku University, Aoba Sendai 980, Japan
S. Kobayashi
Affiliation:
Faculty of Engineering, Tohoku University, Aoba Sendai 980, Japan
M. Suzuki
Affiliation:
Faculty of Engineering, Tohoku University, Aoba Sendai 980, Japan
M. Shimazaki
Affiliation:
Faculty of Science, Japan Women's University, Mejirodai, Bunkyoku, Tokyo 113, Japan
M. Takahashi
Affiliation:
Faculty of Science, Japan Women's University, Mejirodai, Bunkyoku, Tokyo 113, Japan
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Abstract

Gel fibers have been prepared by extruding cellulose acetate spinning solution into transition metal (Ti, Zr, Hf, Nb, Ta) acetone solution as a coagulation bath. Gel formation must be due to the coordination of metal to OH and CO groups on the pyranose ring. The resultant gel fibers have been converted into carbide fibers by pyrolyzing them in Ar and N2 atmospheres at temperatures lower than for powder processing. This precursor gel can give a molecular scale mixture of metal and carbon sources.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 3 , March 1998 , pp. 760 - 765
Copyright
Copyright © Materials Research Society 1998

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References

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