J0802-4-3 高温制御雰囲気下におけるLa_<0.6>Sr_<0.4>Co_<0.2>Fe_<0.8>O_<3-δ>の機械的特性評価([J0802-4]SOFC,PV,キャパシタ)

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This paper examined mechanical properties, Young's modulus, shear modulus, Poisson's ratio and internal friction, of La_<0.6>Sr_<0.4>Co_<0.2>Fe_<0.8>O_<3-δ> in the temperature range between 298 and 1173 K, and the oxygen partial pressure (P(O_2)) range between 0.1 and 10^<-4> bar by using resonance method. The Young's modulus of La_<0.6>Sr_<0.4>Co_<0.2>Fe_<0.8>O_<3-δ> gradually decreased in the temperature range between 298 and 823 K and then drastically increased above 873 K. P(0_2) dependencies of Young's modulus showed different trends depending on temperature. At 1173K, Young's modulus decreased with decreasing P(O_2), while increased down to 5.0×10^<-3> bar and then decreased with decreasing P(O_2) at 1073K. At 973K, it monotonically increased with decreasing P(O_2), and at 873K, slightly increased with decreasing P(O_2).
2010-09-04