Mechanical properties of La 0.6Sr 0.4Co 1-yFe yO 3-δ under various temperatures and oxygen partial pressures

Y. Kimura, T. Kushi, S. Hashimoto, S. Watanabe, K. Amezawa, T. Kawada, Y. Fukuda, Atsushi Unemoto, K. Sato, K. Yashiro, J. Mizusaki, T. Hashida

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

3 Citations (Scopus)

Abstract

Young's modulus, shear modulus, Poisson's ratio and internal friction of La 0.6Sr 0.4CoO 3-δ (LSC) and La 0.6Sr 0.4Co 0.2Fe 0.8O 3-δ (LSCF6428) were evaluated in the temperature range between 298 to 1173 K, and the oxygen partial pressure, P(O 2), range between 1 × 10 -1 to 1 × 10 -4 bar using the resonance method. The apparent Young's moduli of LSC and LSCF6428 first decreased with increasing temperature, and then drastically increased at intermediate temperatures. P(O 2) dependence of the Young's modulus of LSCF6428 showed different trends depending on temperature. At 873 K, the Young's modulus was almost independent of P(O 2), while it increased with decreasing P(O 2) at 973 K. At 1073 K, it increased down to 5 × 10 -3 bar and then decreased in further lower P(O 2). At 1173 K, it decreased with decreasing P(O 2). Such complicated temperature and P(O 2) dependences are considered as composite phenomena caused by the lattice expansion/shrinkage, the oxygen nonstoichiometry change, and the phase transition.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
Pages2429-2434
Number of pages6
Edition3 PART 3
DOIs
Publication statusPublished - 2011 Dec 1
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: 2011 May 12011 May 6

Publication series

NameECS Transactions
Number3 PART 3
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period11/5/111/5/6

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kimura, Y., Kushi, T., Hashimoto, S., Watanabe, S., Amezawa, K., Kawada, T., Fukuda, Y., Unemoto, A., Sato, K., Yashiro, K., Mizusaki, J., & Hashida, T. (2011). Mechanical properties of La 0.6Sr 0.4Co 1-yFe yO 3-δ under various temperatures and oxygen partial pressures. In Solid Oxide Fuel Cells 12, SOFC XII (3 PART 3 ed., pp. 2429-2434). (ECS Transactions; Vol. 35, No. 3 PART 3). https://doi.org/10.1149/1.3570240