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.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 722-724 |
| ページ数 | 3 |
| ジャーナル | Superconductor Science and Technology |
| 巻 | 13 |
| 号 | 6 |
| DOI | |
| 出版ステータス | Published - 2000 6月 1 |
| 外部発表 | はい |
| イベント | The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn 継続期間: 1999 10月 19 → 1999 10月 22 |
ASJC Scopus subject areas
- セラミックおよび複合材料
- 凝縮系物理学
- 金属および合金
- 電子工学および電気工学
- 材料化学