高温超伝導体の大量磁石は,29Kで17テスラ以上の磁場を捕捉できる
Masaru Tomita1, Masato Murakami
1Superconductivity Research Laboratory, Shibaura 1-16-25, Minato-ku, Tokyo 105-0023, Japan. tomita@rtri.or.jp
Nature
|January 31, 2003
まとめ
研究者は,製造後の処理で大量イトリウム-バリウム-銅-酸化物 (Y-Ba-Cu-O) 超伝導体を強化しました. これにより,機械的および熱的性質が改善され,破裂することなく記録的な17.24Tの磁場トラップが可能になりました.
科学分野:
- マテリアルサイエンス 材料科学
- 凝縮物質物理学 凝縮物質物理学
- 超伝導性は超伝導性である.
背景:
- 大粒高温超伝導体 (RE-Ba-Cu-O) は,大きな磁場を捕捉する能力があるため,永久磁石の用途に適しています.
- 現在のアプリケーションは,機械的な安定性や低熱伝導性により制限され,高磁気圧下での断裂につながる.
- イットリウム-バリウム-銅-酸化物 (Y-Ba-Cu-O) は,このクラスの超伝導体における重要な材料である.
研究 の 目的:
- 大量のY-Ba-Cu-O磁石の機械性能と熱伝導性を改善するために.
- これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために,これらの超伝導体の磁場捕捉能力を高めるために.
- 超伝導磁石の広範なエンジニアリングアプリケーションを妨げている制限を克服するために.
主な方法:
- 機械的特性を高めるため,樹脂浸漬と炭素繊維包装を含む製造後の処理.
- Bi-Pb-Sn-Cd合金で浸潤するための中央の穴を掘り,アルミニウムワイヤの支柱を挿入します.
- この二重アプローチは,内部機械的強度と熱安定性を改善することを目的とした.
主要な成果:
- 熱安定性と内部力学強度の有意な向上が達成されました.
- 処理された散発型Y-Ba-Cu-O磁石は,記録的なトラップ磁場17.24テスラ (T) を実証しました.
- 直径2.65cmの試料は,破裂することなく29Kで成功裏に活性化されました.
結論:
- 開発された製造後の処理は,大量のY-Ba-Cu-O超伝導体の機械的および熱性能を効果的に改善します.
- この画期的な発見により,より高い磁場捕捉能力が可能になり,超伝導磁石の潜在的応用が拡大しています.
- 強化された安定性と強さは,より堅牢で信頼性の高い超伝導磁石技術への道を開く.
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