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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