郝清滨,李成山,郑会玲,熊晓梅,刘国庆,胡锐

• 1:西北有色金属研究院
• 2:西北工业大学凝固技术国家重点实验室

摘要(Abstract)：

采用粉末装管法(PIT)制备(Bi,Pb)2Sr2Ca2Cu3Oy(Bi-2223)超导带材,通过X射线衍射仪、扫描电镜研究热处理气氛对Bi-2223晶粒尺寸、结晶度及相组成的影响。研究结果表明:采用空气热处理有利于Bi-2223晶粒的长大;采用7.5%O2-Ar气氛热处理带材中存在较少的非超导相,且Bi-2223的结晶度较高;通过一种复合气氛热处理(热处理过程中使用两种气氛),带材Bi-2223晶粒尺寸较大且非超导相较少。工艺优化后最终带材的临界电流密度超过20000A/cm2(自场,77K)。

关键词(KeyWords)： Bi-2223带材;晶粒大小;AEC相;热处理气氛

Abstract:

Keywords:

基金项目(Foundation): 陕西省“13115”科技创新工程重大科技专项项目(2007ZDKG-45);; 国家自然科学基金(50872114)

作者(Author): 郝清滨,李成山,郑会玲,熊晓梅,刘国庆,胡锐

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