Superplastic Phenomenon in Sc2O3 Doped Zirconia Polycrystals to be Used for SOFC

Abstract:

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The 4mol%Sc2O3 doped ZrO2 (4ScSZ) showed a superplastic-like large elongation in a range of strain-rate at 1773K. The large elongation was caused by both of high strain-rate sensitivity and high strain hardening during the deformation. Ion conductivity of the 4ScSZ, deformed superplastically at a relatively high strain-rate region, was higher than that of non-deformed one, suggesting that superplastic deformation can improve its conductivity. These results are discussed with probable microstructural evolution.

Info:

Periodical:

Materials Science Forum (Volumes 551-552)

Edited by:

K.F. Zhang

Pages:

481-486

DOI:

10.4028/www.scientific.net/MSF.551-552.481

Citation:

Y. Motohashi et al., "Superplastic Phenomenon in Sc2O3 Doped Zirconia Polycrystals to be Used for SOFC", Materials Science Forum, Vols. 551-552, pp. 481-486, 2007

Online since:

July 2007

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Price:

$35.00

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