Superconducting properties of powder metallurgy processed nb3al wires

K. Watanabe, K. Noto, Y. Muto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Powder metallurgy processed Nb3Al wires with low areal reduction ratios of R = 8xl03 to 1x10 4 have been investigated on superconducting properties. We have done the optimization of high field Jc values for Nb-8 wt.%Al with different areal reduction ratios. Tc was 17.1 K for the sample with a two stage heat treatment such as 1200 °C for 15 sec followed by 750 °C for 3 days in contrast to the Low T c values below 16 K for the samples with a single heat treatment at 800°C. B c2 for a two stage heat treated sample increased about 5 T at 4.2 K in comparison with a single heat, treated sample. The measured B c2 values were well fitted to the theoretical curve of the upper critical field. The overall J c values were measured up to 23 T at 4.2 K and Jc = 104 A/cm 2 at 17.5 T was achieved.

Original languageEnglish
Pages (from-to)1428-1431
Number of pages4
JournalIEEE Transactions on Magnetics
Volume23
Issue number2
DOIs
Publication statusPublished - 1987 Mar

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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