熱サイクルにおける固体酸化物型燃料電池セラミックスのX線応力測定(S06-3 放射光応力評価の実用化,S06 放射光による応力測定と残留応力評価)

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Solid-oxide fuel cells (SOFC) are expected to be one of the most effective and clean energy sources because of their highest efficiency and simple system. SOFC is consisted of three layered structures: anode, electrolyte and cathode. In order to guarantee their long-term durability, it is important to comprehend stress state aroundinterface between electrolyte and anode. This paper describes measurement of X-ray elastic constants of 10mol%Sc_2O_3 stabilized ZrO_2 (10ScSZ) consisting electrolyte and X-ray stress measurement for interface between electrolyte and anode. Cr-Kα_1 and Cu-Kα_1 was used to measure X-ray elastic constants of ZrO_2 (331), (311), (620), (531), (422) and (333+511) diffraction. Single crystal elastic compliances s_<11>, s_<12> and s_<44> are determined using these data by the simplex method. The stress in 10ScSZ during heat cycle was measured using monochromatic X-rays with an energy level of 71.5keV from a synchrotron source. The stress varies linearly with temperature.
社団法人日本機械学会の論文
2004-09-04