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

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルSolid Oxide Fuel Cells 12, SOFC XII
ページ2429-2434
ページ数6
3 PART 3
DOI
出版ステータスPublished - 2011 12 1
イベント12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
継続期間: 2011 5 12011 5 6

出版物シリーズ

名前ECS Transactions
番号3 PART 3
35
ISSN(印刷版)1938-5862
ISSN(電子版)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)

フィンガープリント 「Mechanical properties of La <sub>0.6</sub>Sr <sub>0.4</sub>Co <sub>1-y</sub>Fe <sub>y</sub>O <sub>3-δ</sub> under various temperatures and oxygen partial pressures」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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