A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a cubic scandia-stabilized zirconia film which is prevented from lowering in strength even when exposed to a hydrothermal degradation environment, and to provide a single cell for a solid oxide-type fuel cell comprising the cubic scandia-stabilized zirconia film and is prevented from lowering in strength by hydrothermal degradation.SOLUTION: A cubic scandia-stabilized zirconia film comprises scandia in a content of 8 mol% or more and 12 mol% or less, and ceria in a content of 0.5 mol% or more and 2.5 mol% or less. When the film is kept under a hydrothermal condition of a temperature of 180°C and a pressure of 10 atm for 200 hours, a rate of change before and after the treatment in peak areas of (200) face derived from a cubic crystal is 1.0% or less as measured by X-ray diffractometry.SELECTED DRAWING: None
【課題】本発明は、水熱劣化環境に晒されても強度の低下が抑制されている立方晶系スカンジア安定化ジルコニア膜と、当該立方晶系スカンジア安定化ジルコニア膜を含み、水熱劣化による強度の低下が抑制されている固体酸化物形燃料電池用単セルを提供することを目的とする。【解決手段】本発明に係る立方晶系スカンジア安定化ジルコニア膜は、スカンジアを８モル％以上、１２モル％以下、セリアを０．５モル％以上、２．５モル％以下含み、温度１８０℃、圧力１０ａｔｍの水熱条件下、２００時間保持した前後における、Ｘ線回折法により測定される立方晶由来の（２００）面のピーク面積の変化率が１．０％以下であることを特徴とする。【選択図】なし
PROBLEM TO BE SOLVED: To provide a cubic scandia-stabilized zirconia film which is prevented from lowering in strength even when exposed to a hydrothermal degradation environment, and to provide a single cell for a solid oxide-type fuel cell comprising the cubic scandia-stabilized zirconia film and is prevented from lowering in strength by hydrothermal degradation.SOLUTION: A cubic scandia-stabilized zirconia film comprises scandia in a content of 8 mol% or more and 12 mol% or less, and ceria in a content of 0.5 mol% or more and 2.5 mol% or less. When the film is kept under a hydrothermal condition of a temperature of 180°C and a pressure of 10 atm for 200 hours, a rate of change before and after the treatment in peak areas of (200) face derived from a cubic crystal is 1.0% or less as measured by X-ray diffractometry.SELECTED DRAWING: None
【課題】本発明は、水熱劣化環境に晒されても強度の低下が抑制されている立方晶系スカンジア安定化ジルコニア膜と、当該立方晶系スカンジア安定化ジルコニア膜を含み、水熱劣化による強度の低下が抑制されている固体酸化物形燃料電池用単セルを提供することを目的とする。【解決手段】本発明に係る立方晶系スカンジア安定化ジルコニア膜は、スカンジアを８モル％以上、１２モル％以下、セリアを０．５モル％以上、２．５モル％以下含み、温度１８０℃、圧力１０ａｔｍの水熱条件下、２００時間保持した前後における、Ｘ線回折法により測定される立方晶由来の（２００）面のピーク面積の変化率が１．０％以下であることを特徴とする。【選択図】なし
CUBIC SCANDIA-STABILIZED ZIRCONIA FILM
立方晶系スカンジア安定化ジルコニア膜
HATA KAZUO (author)
2016-06-20
Patent
Electronic Resource
Japanese
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