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Continuous Spinning of Zirconia Fibers: Relations Between Processing and Strength

Published online by Cambridge University Press:  25 February 2011

Mehrgan E. Khavari ,
F. F. Lange ,
Paul Smith  and
D. B. Marshall
Mehrgan E. Khavari
Affiliation:
Materials Department, University of California, Santa Barbara, CA 93106
F. F. Lange
Affiliation:
Materials Department, University of California, Santa Barbara, CA 93106
Paul Smith
Affiliation:
Materials Department, University of California, Santa Barbara, CA 93106
D. B. Marshall
Affiliation:
Rockwell International, Science Center, 1049 Camino Dos Rios, Thousand Oaks,CA 91360
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Abstract

Continuous ZrO2 precursor fibers were produced by dry spinning an aqueous zirconium acetate solution containing a soluble yttrium salt and a high molecular weight (MW = 5 × 106) polymer (PEO) to control rheology. A ZrO2-Y2O3 binary composition containing 3 mole % Y2O3 was chosen to control grain growth and to produce tetragonal ZrO2 subsequent to pyrolysis and heat treatment. Fine grained (< 0.3 μm), poly crystalline Zr(Y)O2fibers with diameters between 2 to 12 μm were produced by pyrolysis and heat treatment up to 1400 °C. Fiber tensile strength was measured as a function of processing variables. The objective was to relate flaw populations encountered during strength measurements to processing variables with the goal of controlling and increasing fiber strength.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 617
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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