Improvement of the mechanical properties of bulk superconductors with resin impregnation

M. Tomita, Masato Murakami

研究成果: Article

71 引用 (Scopus)

抄録

Large single-grain RE-Ba-Cu-O (RE: rare-earth elements) superconductors can trap large magnetic fields over several tesla, and thus can be used as quasi-permanent magnets, generating fields much higher than those of conventional permanent magnets. However, the maximum trapped field is essentially limited by the mechanical properties of bulk superconductors, since a large electromagnetic force acts on the bulks when they trap large fields. The stress produced by refrigeration also causes cracking. We have recently found that epoxy resin can penetrate into bulk superconductors under appropriate conditions. Microstructural observations revealed that microcracks as well as macrocracks or porosities can be impregnated with epoxy resin, which greatly improves the mechanical properties of bulk RE-Ba-Cu-O superconductors and thus results in the improvement of their field-trapping capability.

元の言語English
ページ(範囲)722-724
ページ数3
ジャーナルSuperconductor Science and Technology
13
発行部数6
DOI
出版物ステータスPublished - 2000 6
外部発表Yes

Fingerprint

Impregnation
resins
Superconducting materials
Resins
mechanical properties
Epoxy Resins
Mechanical properties
epoxy resins
permanent magnets
Epoxy resins
Permanent magnets
traps
microcracks
Microcracks
Refrigeration
Rare earth elements
rare earth elements
Porosity
trapping
Magnetic fields

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

これを引用

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