| 结合连续管线成型技术和粉末套管法制备SiC掺杂的MgB_2超导线材研究 |
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| 引用本文： | 马麟,索红莉,张子立,王朝,高培阔,刘敏,赵跃,曹玲柱,李亚明,周美玲.结合连续管线成型技术和粉末套管法制备SiC掺杂的MgB_2超导线材研究[J].稀有金属材料与工程,2008(Z4). |
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| 作者姓名： | 马麟 索红莉 张子立 王朝 高培阔 刘敏 赵跃 曹玲柱 李亚明 周美玲 |
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| 作者单位： | 北京工业大学新型功能材料教育部重点实验室; |
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| 基金项目： | 北京市自然科学基金(2072004); 国家教委全国百篇优秀博士论文专项资金(200331); 国家自然科学基金(50771003); 国家“973”计划(2006CB601005); 北京工业大学111人才工程资助等项目的资助 |
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| 摘 要： | 结合连续管线成型技术和粉末套管方法,原位掺杂SiC制备出了20m长的单芯MgB2/Fe、MgB2/Nb/Fe线材和7芯、19芯及49芯的MgB2/Nb/Cu/Fe复合多芯线材。采用XRD和SEM分别对烧结后样品芯部进行相成分和微观结构研究,并通过TEM对SiC掺杂的机理进行了简单分析。采用四引线法对线材进行电流测量并获得临界电流密度。结果表明,线材经过不同温度保温15min的真空退火后,在800℃形成的MgB2相含量最高,其中单芯MgB2/Fe线材在4.2K,11T下Jc值超过104A/cm2,7芯复合线材在4.2K,7.5T下Jc值也达到104A/cm2,并且具有较好的热稳定性,在低场下仍可稳定通过电流。
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| 关 键 词： | MgB2线材 连续管线成型技术 SiC掺杂 |
Study on Processing SiC-Doped MgB_2 Superconducting Wires by Combining Both CTFF Technique and PIT Method |
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| Ma Lin,Suo Hongli,Zhang Zili,Wang Zhao,Gao Peikuo,Liu Min,Zhao Yue,Cao Lingzhu,Li Yaming,Zhou Meiling.Study on Processing SiC-Doped MgB_2 Superconducting Wires by Combining Both CTFF Technique and PIT Method[J].Rare Metal Materials and Engineering,2008(Z4). |
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| Authors: | Ma Lin Suo Hongli Zhang Zili Wang Zhao Gao Peikuo Liu Min Zhao Yue Cao Lingzhu Li Yaming Zhou Meiling |
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| Affiliation: | Ma Lin,Suo Hongli,Zhang Zili,Wang Zhao,Gao Peikuo,Liu Min,Zhao Yue,Cao Lingzhu,Li Yaming,Zhou Meiling (Beijing University of Technology,Beijing 100022,China) |
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| Abstract: | 20 meters long in-situ SiC doped mono-MgB2/Fe, MgB2/Nb/Fe and 7-, 19-, 49-MgB2/Nb/Cu/Fe multi-filamentary wires have been fabricated by combining both continuous tube forming & filling (CTFF) and powder in tube (PIT) processes. The phase compositions and microstructures of the MgB2 cores in the obtained MgB2 wires were investigated by XRD and SEM, respectively. Furthermore, the mechanism of SiC doping in MgB2 crystal was simply discussed by TEM observation. The transport Jc values in these wires were measur... |
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| Keywords: | MgB2 wire continuous tube forming & filling SiC doping |
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