S0305-3-3 SOFC構成材料における不定比性と機械特性の相関(SOFC構成材料の信頼性(3))

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In this study, Crystal structure and mechanical properties of K_2NiF_4 type oxides were measured by high temperature X-ray diffractometry and in-situ small punch test as a function of oxygen partial pressure, P(O_2) and temperature. Chemically induced volume change was evaluated by nonstoichiometric data and the variation of the lattice constants with P(O_2). The elastic modulus and the fracture strength become larger at higher P(O_2) condition. This may be caused by the structural change due to the variation of oxygen content.
社団法人日本機械学会の論文
2009-09-12