Article ID

1997Bdb1021

Title

Experimental Phase Equilibria in the Sr-Ca-Cu-O System Under Reduced Oxygen Atmosphere

Œ¸ˆ³Ž_‘f•µˆÍ‹C‰º‚É‚¨‚¯‚éSr-Ca-Cu-OŒn‚ÌŽÀŒ±‘Š•½t

Author(s)

Ryosuke O. Suzuki, Takamichi Ogawa, Daniel Risold, Ludwig J. Gauckler* and and Katsutoshi Ono \par
* ETH-Zuerich

—é–Ø—º•ãA¬ì‹M“¹Aƒ_ƒjƒGƒ‹@ƒŠƒ]ƒ‹ƒgAƒ‹[ƒhƒrƒbƒq@ƒKƒEƒNƒ‰[A¬–쏟•q

Publication/Publisher

Netsu Sokutei, Vol.24 No.2 (1997) pp.61-68.

”M‘ª’è, Vol.24 No.2 (1997) pp.61-68.

Abstract


Phase equilibria were studied in the Sr-Ca-Cu-O system by annealing samples at 1153K in Ar-O2 gas mixtures. The stability ranges of the oxide solid solutions were observed by X-ray diffraction measurements especially at 4 compositions in 12 gas mixtures. 4 sets of invariant 4-phase equilibrium and their oxygen partial pressure, PO2, were deduced from the surrounding 3-phase equilibria. The compositions of the related phases were evaluated by combining EDX analysis and the sample compositions. These results are compared with equilibrium calculations based on thermodynamic modelling.