Mechanical Properties of Scandia Stabilised Zirconia with Alumina Addition

Abstract:

Zirconium oxide doped with scandium oxide is one of the most promising materials for electrolytes of solid oxide fuel cells because of its high ionic conductivity. In this study, temperature dependence of mechanical property, especially strength, of 9 mol% scandia doped zirconia polycrystalline samples with 0 to 30 wt% of alumina additions was examined at temperatures from 293 to 1273 K. Ionic conductivity was also measured by AC impedance analysis. From both mechanical and electrical standpoints, the experimental results were discussed in terms of alumina addition.

• Periodical: Key Engineering Materials (Volumes 385-387)
• Pages: 441-444
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.385-387.441
• Online since: July 2008
• Authors: Wakako Araki, Hiroyuki Norigoe, Tadaharu Adachi
• Keywords: Mechanical Property, Solid Oxide Fuel Cell (SOFC), Zirconia

References

[1] Y. Arachi et al.: Solid State Ionics Vol. 121 (1999), 121, p.133.

[2] V.V. Kharton et al: Solid State Ionics Vol. 174 (2004), p.135.

[3] R.W. Rice: Mechanical properties of ceramics and compositess (Marcel Dekker Inc, New York 2000). Figure 3 Grain size effect on strength Figure 4 Property diagram.