Superior transport J_c obtained in in-situ MgB₂ wires by tailoring the starting materials and using a combined cold high pressure densification and hot isostatic pressure treatment

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• 作者：Hyunseock Jie^a ; Wenbin Qiu^a ; Motasim Billah^a ; Mislav Mustapic^a ; ^g ; Dipak Patel^a ; Zongqing Ma^a ; ^{mzq0320@163.com} ; Daniel Gajda^b ; Andrzej Morawski^c ; Tomasz Cetner^c ; Mohammed Shahabuddin^d ; Ekrem Yanmaz^e ; Matt Rindfleisch^f ; Jung Ho Kim^a ; Md Shahriar A Hossain^a ; ^{shahriar@uow.edu.au}
• 关键词：MgB2 wires ; Transport Jc ; Pressure
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：79-83
• 全文大小：739 K
• 卷排序：129

文摘

The best Jc performance (8 × 104 A·cm− 2 at 10 T, 4.2 K) has been obtained in our work among all the in-situ powder-in-tube (PIT) MgB2 wires reported so far by tailoring their boron and magnesium precursors, as well as employing appropriate high pressure during the manufacturing process. Moreover, the second stage densification using the special HIP has been applied to commercial long-length wire. Our work suggests that the economical starting precursors and the combination of cold and hot densification techniques could represent a promising alternative for industrial and economical production of practical MgB2 wires with excellent Jc.