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

doi:10.1149/1.3205692

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 proceeding › Conference 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 language	English
Title of host publication	ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages	1565-1572
Number of pages	8
Edition	2 PART 2
DOIs	https://doi.org/10.1149/1.3205692
Publication status	Published - 2009
Event	11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria Duration: 2009 Oct 4 → 2009 Oct 9

Publication series

Name	ECS Transactions
Number	2 PART 2
Volume	25
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Country/Territory	Austria
City	Vienna
Period	09/10/4 → 09/10/9

ASJC Scopus subject areas

Engineering(all)

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10.1149/1.3205692

Cite this

Deformation and fracture characteristics of zirconia and ceria-based electrolytes for SOFCs under reducing atmospheres. / Hashida, T.; Sato, K.; Takeyama, Y. et al.

ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI). 2 PART 2. ed. 2009. p. 1565-1572 (ECS Transactions; Vol. 25, No. 2 PART 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hashida, T , Sato, K, Takeyama, Y, Kawada, T & Mizusaki, J 2009, Deformation and fracture characteristics of zirconia and ceria-based electrolytes for SOFCs under reducing atmospheres. in ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI). 2 PART 2 edn, ECS Transactions, no. 2 PART 2, vol. 25, pp. 1565-1572, 11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting, Vienna, Austria, 09/10/4. https://doi.org/10.1149/1.3205692

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AU - Mizusaki, J.

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AB - 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.

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

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