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Nb3Sn(Ti) powder metallurgy processed high field superconductors

 

作者: S. Pourrahimi,   C. L. H. Thieme,   S. Foner,   M. Suenaga,  

 

期刊: Applied Physics Letters  (AIP Available online 1986)
卷期: Volume 48, issue 26  

页码: 1808-1810

 

ISSN:0003-6951

 

年代: 1986

 

DOI:10.1063/1.96794

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Powder metallurgy processed Nb3Sn(Ti) superconducting wires were fabricated with Snxwt. % Ti cores for 0≤x≤3, 16 or 22 vol % cores, and a Cu 45 wt. % Nb composite. The processing used swaging, cold hydrostatic extrusions, wire drawing and heat treatments of 750 °C for two to four days. Nominal areal reductions of 104were used. Hydride‐dehydride Nb and rotating electrode processed Nb powders gave the same performance. Overall critical current densitiesJcwere measured between 4.2 and 1.8 K for applied fields up to 23 T.Jcincreased with increased Ti and/or Sn content. The Nb3Sn(Ti) wires using a Sn 3 wt. % Ti, 22 vol % core gaveJc>104A/cm2at 20 T and 4.2 K andJc=104A/cm2at 23 T at 1.8 K. Removal of the precompression of the matrix increasedJcby about a factor of 2 at 20 T and 4.2 K.

 

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