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- W2475778906 abstract "고체 산화물 연료전지의 전해질로 주로 사용되는 8mol.% $Y_2$ $O_3$ - $ZrO_2$ 는 전기 전도성은 우수하나 기계적 특성이 좋지 못하므로, 전기적 특성과 기계적 특성이 동시에 우수한 고체산화물 연료전지의 전해질의 개발이 요구되고 있다. 본 연구는 이러한 두 가지 요구조건을 충족시키기 위해서 수행되어졌다. 단위전지의 공기극 재료인 LSM(La(sub)0.75Sr(sub)0.25MnO $_3$ ) 기판과 Si wafer를 기판으로 기계적 성질이 우수한 3mol.%의 YSZ(3-YSZ)와 전기 전도성이 우수한 8mol.%의 YSZ(8-YSZ)를 각각 단층 및 다층 박막의 네 가지 형태로 전자빔 코팅에 의해 전해질 막을 제작하였다. 박막층의 분석결과, 결정조직은 증착된 3-YSZ 박막의 정방정 및 일부 단사정 구조, 8-YSZ 박막은 입방정 구조의 결정성이 나타났다. 단층막 보다 다층막이 낮은 내부 응력을 보였으며, 다층막이 기존의 8-YSZ 단층막의 열처리 전, 후와 비슷한 미세 경도 값을 보였다. 【The 8mol.%Y $_2$ $O_3$ - $ZrO_2$ mainly employed as an electrolyte of solid oxide fuel cells(SOFCs) shows excellent electrical properties but has a weakness in the mechanical properties. Since the electrolyte of SOFCs requires both good electrical and mechanical properties, this study was conducted to meet both requirements. The electrolyte thin films were produced on the LSM(cathode material) substrate of a cell and Si wafer. Four electrolyte film types of single layer and the multiple layer, consisting of 3-YSZ(3mol.% $Y_2$ $O_3$ ) with excellent mechanical properties and 8-YSZ with the excellent electric conduction, were produced by electron beam coating technology. Ther crystal structure and the mechanical properties were also analysed. As the results of the study, the 3-YSZ thin film turned out to be in the tetragonal, partially monoclinic phase, while the 8-YSZ thin film showed the cubic phase. The residual stress in the multiple layer was lower than that of the single layer. The microhardness of the multiple layer was similar to that of the existing 8-YSZ single layer both before and after annealing treatment.】" @default.
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- W2475778906 date "1999-01-01" @default.
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- W2475778906 title "A Study on the Mechanical Properties of Single and Multiple layer Thin Film of YSZ Electrolyte Produced by E-beam Coating for Solid Oxide Fuel Cells" @default.
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