Abstract
The effect of alumina additions on the ionic conductivity and mechanical properties of 3 and 8 mol% Y2O3 - ZrO2 compositions has been investigated. Such materials are of interest for use in fuel cells and other similar applications. Sintered specimens were characterised by XRD, SEM, impedance spectroscopy, four — probe DC conductivity and mechanical strength measurements. Alumina additions had no affect on the conductivity degradation behaviour at 1000 °C and the activation energy but resulted in an increase in the strength of 8 mol% Y2O3 - ZrO2 composition by about 25%. However, a significant drop in the ionic conductivity well above what could be accounted for by the decrease in the volume fraction of the conducting phase, was observed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
7. References
S. Rajendran, J. Drennan and S.P.S. Badwal, J. Mater. Sci. Letts.6, 1431 (1987).
K. Tsukuma, K. Ueda, K. Mitsushita and M. Shimada, J. Am. Ceram. Soc.68(2), C56 (1985).
M. Miyayama, H. Yanagida and A. Asada, Am. Ceram. Soc. Bull.64(4), 660 (1985).
M. Mori, T. Abe, H. Itoh, O. Yamamoto, Y. Takeda and T. Kawahara, Solid State Ionics74, 157 (1994).
J. Drennan and S.P.S. Badwal, in: Advances in Ceramics, Vol. 24B, (S. Somiya, O. Yamamoto and H. Yanagida, Editors) The Am. Ceram. Soc. Inc., Westerville, Ohio, 1986, p. 807.
F.J. Esper, K.H. Friese and H. Geier, in: Advances in Ceramics, Vol. 12, (N. Claussen and A.H. Heuer, Editors) The Am. Ceram. Soc. Inc., Columbus, Ohio, 1984, p. 528.
A.J. Feighery and J.T.S. Irvine, 11th International Conference on Solid State Ionics, Honolulu, Hawaii, USA, November 16–21, 1997.
J. Drennan and E.P. Butler, Science of Ceramics12, 267 (1984).
S. Rajendran, M.V. Swain and H.J. Rossell, J. Mater. Sci.23, 1805 (1988).
S.P.S. Badwal, Appl. Phys. (A) Solids and Surfaces50, 449 (1990).
S.P.S. Badwal, F.T. Ciacchi and D.V. Ho, J. Appl. Electrochem.21, 721 (1991).
S.P.S. Badwal, F.T. Ciacchi and R.H.J. Hannink, Solid State Ionics40/41, 882 (1990).
H.G. Scott, J. Mater. Sci.10, 1527 (1975).
M. Yoshimura, Ceram. Bull.67, 1950 (1988).
F. T. Ciacchi and S.P.S. Badwal, J. European Ceram. Soc.7, 197 (1991).
F. T. Ciacchi, S. P. S. Badwal and J. Drennan, J. European Ceram. Soc.7, 185 (1991).
J.A. Kilner and R.J. Brook, Solid State Ionics6, 237 (1982).
A. Nakamura and J.B. Wagner Jr, J. Electrochem. Soc.133, 1542 (1986).
S.P.S. Badwal, in: Materials Science and Technology, A Comprehensive Treatment, Vol 11, (R.W. Cahn, P. Haasen, E.J. Kramer, Editors, vol. editor: M.V. Swain) VCH Verlagsgesellschaft, Weinheim, 1994, p. 567.
T. Masaki, J. Am. Ceram. Soc.,69(8), 638 (1986).
M. I. Mendelson, J. Am. Ceram. Soc.52(8), 443 (1969).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Badwal, S.P.S., Ciacchi, F.T. & Zelizko, V. The effect of alumina addition on the conductivity, microstructure and mechanical strength of zirconia — yttria electrolytes. Ionics 4, 25–32 (1998). https://doi.org/10.1007/BF02375776
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02375776