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SrCoO_(2.5+δ)的结构和氧脱附行为研究 被引量：1

Investigation of the structure and oxygen diffusion behavior of SrCoO_(2.5+δ)
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摘要 采用固相反应法合成了SrCoO2.5+δ样品,用XRD表征了在空气和纯氧气氛下自然降温以及淬火后SrCoO2.5+δ的结构;利用程序升温脱附技术(TPD)考察了在高纯He气氛下SrCoO2.5+δ的氧脱附行为。XRD结果表明,经自然降温方式得到SrCoO2.5+δ的结构是六方结构,而经淬火得到的SrCoO2.5+δ表现为brownmil-lerite结构;SrCoO2.5+δ的氧脱附行为与其相结构有很大的关系,在纯氧气氛下降温的SrCoO2.5+δ在中高温区出现了3个相转变过程。 The SrCoO2.5＋δ was synthesized by solid state reaction, and the structures of different sam pies cooling under air and pure oxygen atmosphere were characterized by XRD. O2-TPD technique was used to study the oxygen diffusion behavior of SrCoO2.5＋δ. The H-hexagonal and brownmillerite structures appeared when the samples were cooled slowly and quenched respectively. The oxygen diffusion behavior of SrCoO2.5＋δ has relation with the structure. There were three phase transitions during 600～1000℃ for SrCoO2.5＋δ for which cooling under pure oxygen.
作者 冯绍杰 易建新
机构地区 安徽建筑工业学院材料科学与工程系 中国科技大学材料科学与工程系
出处 《安徽建筑工业学院学报（自然科学版）》 2006年第1期77-80,85,共5页 Journal of Anhui Institute of Architecture(Natural Science)
基金 国家自然科学基金资助(50442024)
关键词 SrCoO2.5+δ 相转变 TPD SrCoO2．5＋δ phase transition O2-TPD
分类号 TB321 [一般工业技术—材料科学与工程]
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参考文献17

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共引文献14

同被引文献7

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安徽建筑工业学院学报（自然科学版）
2006年 第1期

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