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説明:

Nb3Sn remains an indispensable material for high-field applications, including fusion reactors, particle accelerators, and nuclear magnetic resonance systems, owing to its excellent manufacturability and high-field performance. Despite more than 70 years of research, its phase-formation mechanism has not yet been fully elucidated, leaving considerable scope for further performance improvement. This review summarizes recent advances in Nb3Sn conductor development from the perspectives of thermodynamics, diffusion kinetics, and elemental-addition strategies, with particular emphasis on phase formation during diffusion reactions. Key topics include control of the Sn chemical potential, diffusion behavior of Sn and Cu, Ti and Zn addition effects, grain-boundary chemistry, multielement addition strategies, and strengthening of the Sn core. The review provides a unified thermodynamic and kinetic framework for understanding and optimizing Nb3Sn layer formation.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Nb3Sn, elemental addition, phase formation

刊行年月日: 2026-08-01

出版者: IOP Publishing

掲載誌:

• Superconductor Science and Technology (ISSN: 09532048) vol. 39 issue. 8 083002

研究助成金:

• Japan Society for the Promotion of Science JP23K04453

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1088/1361-6668/ae922b

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更新時刻: 2026-08-24 09:53:39 +0900

MDRでの公開時刻: 2026-08-24 12:27:04 +0900