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

研究成果: Conference contribution

13 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
ページ1565-1572
ページ数8
2 PART 2
DOI
出版ステータスPublished - 2009 12 1
イベント11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
継続期間: 2009 10 42009 10 9

出版物シリーズ

名前ECS Transactions
番号2 PART 2
25
ISSN(印刷版)1938-5862
ISSN(電子版)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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