Improvement of the mechanical properties and durability of bulk superconductors with resin impregnation

M. Tomita, M. Murakami

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


Large single-grain bulk RE-Ba-Cu-O (RE: rare earth elements) superconductors can trap large fields exceeding several teslas and thus can function as very strong quasi-permanent magnets. At present the maximum trapped field is essentially limited by the mechanical strength of bulk superconductors. The stress produced by refrigeration sometimes causes cracking. A large electromagnetic force will also act on the superconductors, when they trap large magnetic fields, leading to the fatal failure. We have recently found that epoxy resin can penetrate into the bulk superconductors under controlled conditions. It has been confirmed that a dramatic improvement of durability and field trapping capability can be achieved with resin impregnation.

Original languageEnglish
Pages (from-to)2443-2444
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume341-348 (IV)
Publication statusPublished - 2000 Nov
Externally publishedYes
EventInternational Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
Duration: 2000 Feb 202000 Feb 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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