Improvement of the mechanical properties of bulk superconductors with resin impregnation

M. Tomita, Masato Murakami

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)722-724
Number of pages3
JournalSuperconductor Science and Technology
Volume13
Issue number6
DOIs
Publication statusPublished - 2000 Jun
Externally publishedYes

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

Cite this

Improvement of the mechanical properties of bulk superconductors with resin impregnation. / Tomita, M.; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 13, No. 6, 06.2000, p. 722-724.

Research output: Contribution to journalArticle

@article{22cdcabc5ae6499b85be2c8a4d55a1b8,
title = "Improvement of the mechanical properties of bulk superconductors with resin impregnation",
abstract = "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.",
author = "M. Tomita and Masato Murakami",
year = "2000",
month = "6",
doi = "10.1088/0953-2048/13/6/318",
language = "English",
volume = "13",
pages = "722--724",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
publisher = "IOP Publishing Ltd.",
number = "6",

}

TY - JOUR

T1 - Improvement of the mechanical properties of bulk superconductors with resin impregnation

AU - Tomita, M.

AU - Murakami, Masato

PY - 2000/6

Y1 - 2000/6

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0033690482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033690482&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/13/6/318

DO - 10.1088/0953-2048/13/6/318

M3 - Article

VL - 13

SP - 722

EP - 724

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 6

ER -