Recent Progress in Application of Internal Oxidation Technique in Nb3Sn Strands

被引：3
|
作者：
Xu X. [1 ]
Peng X. [2 ]
Sumption M. [3 ]
Collings E.W. [3 ]
机构：
[1] Fermi National Accelerator Laboratory, Batavia, 60510, IL
[2] Hyper Tech Research, Inc., Columbus, 43228, OH
[3] Ohio State University, Columbus, 43210, OH
来源：
| 1600年 / Institute of Electrical and Electronics Engineers Inc., United States卷 / 27期
关键词：
heat treatment; internal oxidation; Nb[!sub]3[!/sub]Sn strands; oxygen transfer; subelement design;
D O I：
10.1109/TASC.2016.2625780
中图分类号：
学科分类号：
摘要：
The internal oxidation technique can generate ZrO2 nano particles in Nb3Sn strands, which markedly refine the Nb3Sn grain size and boost the high-field critical current density (Jc). This paper summarizes recent efforts on implementing this technique in practical Nb3Sn wires and adding Ti as a dopant. It is demonstrated that this technique can be readily incorporated into the present Nb3Sn conductor manufacturing technology. Powder-in-tube (PIT) strands with fine subelements (∼25 μm) based on this technique were successfully fabricated, and proper heat treatments for oxygen transfer were explored. Future work for producing strands ready for applications is proposed. © 2016 IEEE.
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