Deformation and fracture characteristics of zirconia and ceria-based electrolytes for SOFCs under reducing atmospheres

T. Hashida, K. Sato, Y. Takeyama, T. Kawada, J. Mizusaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

In this paper, we discuss the effects of different oxygen partial pressures on the elastic modulus and fracture strength of 8 mol% yttria stabilized zirconia (8YSZ) and 10 mol% gadolinia doped ceria (10GDC). The specimens of 8YSZ and 10GDC prepared by a sintering process were treated at 800°C under different oxygen partial pressures in the range of 0.2 to 10-22 atm for 1 hour. The treated specimens were then fast cooled down to a room temperature, and their mechanical properties were measured under an atmospheric pressure condition by using the small-punch testing method. The experimental results revealed that both the elastic modulus and fracture strength of the IOGDC decreased drastically when the oxygen partial pressure of the treatment was less than 10-15 atm, whereas no significant variation in both the mechanical properties was observed for the 8YSZ.

Original languageEnglish
Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages1565-1572
Number of pages8
Edition2 PART 2
DOIs
Publication statusPublished - 2009 Dec 1
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: 2009 Oct 42009 Oct 9

Publication series

NameECS Transactions
Number2 PART 2
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
CountryAustria
CityVienna
Period09/10/409/10/9

ASJC Scopus subject areas

  • Engineering(all)

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