文章信息/Info

Title:

Research Progress of Bi-2212 Superconducting Wire

文章編號:

1674-3962(2025)03-0253-07

作者:

熊志坤; 楊芳; 金利華; 賀一軒; 馮建情; 王大友; 閆果; 張平祥

1．西北工業大學 超導材料與應用技術研究院，陜西 西安 710072 2．西北有色金屬研究院 超導材料研究所，陜西 西安 710016 3．西安聚能醫工科技有限公司，陜西 西安 710028

Author(s):

XIONG Zhikun; YANG Fang; JIN Lihua; HE Yixuan; FENG Jianqing; WANG Dayou; YAN Guo; ZHANG Pingxiang

1. Institute of Superconducting Materials and Applied Technology, Northwestern Polytechnical University,Xi’an 710072, China 2. Superconducting Materials Research Center, Northwest Institute for Non�瞗errous Metal Research,Xi’an 710016, China

關鍵詞:

超導材料; Bi-2212線材; 線材制備; 粉末裝管法; 臨界電流密度

Keywords:

superconducting material;  Bi-2212 wire;  wire preparation;  powder in tube;  critical current density

分類號:

TM26

DOI:

10.7502/j.issn.1674-3962.202306018

文獻標志碼:

A

摘要:

Bi2Sr2CaCu2O8+x（Bi-2212）超導體有很高的臨界轉變溫度和極高的上臨界磁場，以及在高場下具有優異的載流性能，這使得Bi-2212成為制備高場超導磁體的絕佳材料。并且，Bi-2212是唯一可以制備成各向同性圓線的高溫超導材料，極大地簡化了Bi-2212超導電纜和線圈的制備工藝。所以Bi-2212在強磁場領域，如核磁共振、磁懸浮列車和未來可控核聚變裝置等表現出極大的應用潛力。簡述了Bi-2212多芯線材的制備工藝，包括粉末裝管工藝以及相應的前驅體粉末的制備方法、線材加工技術和部分熔融熱處理工藝等，總結了影響Bi-2212超導線材臨界電流密度的主要因素以及提高Bi-2212超導線材臨界電流密度的方法。

Abstract:

The Bi2Sr2CaCu2O8+x (Bi-2212) superconductor exhibits exceptionally high critical transition temperature and upper critical magnetic field, along with outstanding current�瞔arrying capabilities under high magnetic fields. These characteristics make Bi-2212 an ideal material for high-field superconducting magnet fabrication. Furthermore, Bi-2212 stands as the only high�瞭emperature superconductor that can be fabricated into isotropic round wires, significantly simplifying the manufacturing processes of Bi-2212 superconducting cables and coils. Consequently, Bi-2212 demonstrates substantial application potential in high-field domains such as nuclear magnetic resonance, magnetically levitated train, and future controlled nuclear fusion devices. This article briefly describes the fabrication processes of Bi-2212 multifilamentary wires, including the powder-in-tube method, preparation techniques for precursor powders, wire processing technologies, and partial melting heat treatment processes. Furthermore, the key factors influencing the critical current density of Bi-2212 superconducting wires are summarized and strategies for enhancing their critical current density are discussed.