Mechanical properties and field trapping ability of bulk superconductors with resin impregnation

M. Tomita, M. Murakami, K. Itoh, H. Wada

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Abstract

We have studied the mechanical properties of Y-Ba-Cu-O rods with and without resin impregnation using a Vickers indenter test. The respective stress intensity factor (Kc) values of YBCO superconductors with and without resin impregnation were 0.84 MPa m1/2 and 0.69 MPa m1/2. This shows that resin impregnation is effective in improving the fracture toughness. We also performed trapped-field measurements for YBCO bulk superconductors 24 mm in diameter with and without resin impregnation at 30 K. The samples without resin impregnation could trap 10.17 T at 37 K but cracked at lower temperatures. In contrast, the sample with resin impregnation could stably trap an extremely high field of 14.89 T at 30 K, reflecting the improvement of mechanical properties.

Original languageEnglish
Pages (from-to)78-82
Number of pages5
JournalSuperconductor Science and Technology
Volume17
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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