Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-25T17:58:01.387Z Has data issue: false hasContentIssue false
  • English
  • Français

Modelling Study on the Electrical Behaviour of YSZ-BASED Composites

Published online by Cambridge University Press:  10 February 2011

G. Dotelli ,
F. Casartelli ,
I. Natali Sora ,
C. Schmid  and
C. M. Mari
G. Dotelli
Affiliation:
Department of Industrial Chemistry and Chemical Engineering, Polytechnic of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy, [email protected]
F. Casartelli
Affiliation:
Department of Industrial Chemistry and Chemical Engineering, Polytechnic of Milan, Piazza L. da Vinci 32, 20133 Milano, Italy, [email protected]
I. Natali Sora
Affiliation:
INFM and Department of Mechanical Engineering, University of Brescia, via Valotti 9, 25123 Brescia, Italy
C. Schmid
Affiliation:
INFM and Department of Mechanical Engineering, University of Brescia, via Valotti 9, 25123 Brescia, Italy
C. M. Mari
Affiliation:
Department of Materials Science, University of Milano “Bicocca”, via R.Cozzi 53, 20125 Milano, Italy
Get access

Abstract

Electrical properties of yttria-stabilised zirconia/alumina (YSZ/AI2O3) composites were tentatively foreseen by simulating their complex impedance spectra. A digital image-based model was developed to describe the electrical conduction process in polycrystalline mono- or multi-phase materials. The microstructure of each polycrystalline sample was reconstructed using the Voronoi tessellation technique (in fact, ad hoc modifications with respect to the original algorithm were introduced) and it was then converted into a threedimensional electrical network according to a set of well-defined rules. The network was solved via an iterative procedure for different frequency values and successively the Nyquist plot generated The complex impedance spectra of different composites were simulated considering the alumina content (5,10 and 15 %wt) as a parameter; both the bulk and grain boundary electrical conductivity were calculated and the Arrhenius plots obtained. Experimental and simulated results were compared and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 331
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Hammou, A. and J. Guindette in The CRC Hnadbook of Solid State Electrochemistry, edited by Gellings, P.J. and H.J.M., Bouwmeester (CRC Press, Boca Raton, 1997), p.407–413.Google Scholar
2. Mori, M., Abe, T., Itoh, H., Yamamoto, O., Takeda, Y., and Kawahara, T., Solid State Ionics 74, p. 157 (1994).Google Scholar
3. Fukuya, M., Hirota, K., and Yamaguchi, O., Mater. Res. Bull. 29, p. 619 (1994).Google Scholar
4. Sora, I. Natali, Ph.D. Thesis (in italian), Politecnico di Milano (1995).Google Scholar
5. Navarro, L.M., Recio, P., Jurado, J.R., and Duran, P., J. Mater. Sci. 30, p. 1949 (1995).Google Scholar
6. Natali-Sora, I., Schmid, C., Dotelli, G., Consolati, G., Quasso, F., Mari, C.M., J. Inorg. Mater., submittedGoogle Scholar
7. Natali-Sora, I., Schmid, C., Dotelli, G., Casartelli, F., Mari, C.M., J. Inorg. Mater., submittedGoogle Scholar
8. Sora, I. Natali, Schmid, C., and Mari, C.M. in High Temperature Electrochemistry: Ceramics andMetals, edited by Poulsen, F.W., Bonanos, N., Linderoth, S., Mogensen, M., and B., Zachau-Christiansen ( Proc. 17th Risø Int. Symp. Mater. Sci., Risø National Laboratory, Roskilde, Denmark 1996), p. 369–374.Google Scholar
9. Kirkpatrick, S., Rev. Mod. Phys. 45, p. 574 (1973).Google Scholar
10. Dotelli, G., Volpe, R., Sora, I. Natali, and Mari, C.M., Solid State Ionics 113–115, p. 325 (1998).Google Scholar
11. Dotelli, G., Casartelli, F., Sora, I. Natali, and Mari, C.M. in Computational Modelling and Simualtion of Materials ( Proc. 9th Int. Conf Modem Mater. Technol., vol. F, Techna srl., Faenza Italy ), in press.Google Scholar
12. Derrida, B., Zabolitzky, J.G., Vannimenus, J., Stauffer, D., J. Stat. Phys. 36, p. 31 (1984).Google Scholar
13. de Berg, M., van Kreveld, M., Overmars, M., and Schwarzkopf, O., Computational Geometry, Springer, Berlin, 1997, pp. 233–247.Google Scholar
14. Butler, E.P., and Drennan, J., J. Am. Ceram. Soc. 65, p. 474 (1982).Google Scholar
15. Stoyan, D., Kendall, W.S., Mecke, J., Stochastic Geometry and its Applications, Wiley, Chichester, 1987), pp.257–278 Google Scholar
16. Fleig, J., Maier, J., J. Electrochem. Soc. 145, p. 2081 (1998).Google Scholar