部分溶融法における急冷開始温度のＢｉ２Ｓｒ２ＣａＣｕ２Ｏｙの臨界電流密度への影響

• 彬俣 悦郎

  金沢工業大学工学部電気工学科

• 那須 昭一

  金沢工業大学工学部電気工学科

• 大橋 憲太郎

  金沢工業大学工学部電気工学科

書誌事項

タイトル別名

• The Influence of Starting Temperature of Quench upon the Critical Current Density of Bi2Sr2CaCu2Oy Using Partially Melting Method.
• ブブン ヨウユウホウ ニ オケル キュウレイ カイシ オンド ノ Bi2Sr2

抄録

We prepared Bi₂Sr₂CaCu₂O_y polycrystalline superconductor by partially melting method in HNO₃ or solid state method and investigated the influence of precursor condition and quench temperature upon the critical current density. The best starting temperatures of quench were 650°C in HNO₃ method and 500°C in solid state method. In these conditions, critical current densities were 198A/cm² in the former and 102A/cm² in the latter. We found that starting temperature of quench influences the break of junctions between grains by thermal contraction and condition of precursor influences the occuring defect and grain growth in melting process.<BR>It is important to select the best conditions of quench and precursor to prepare Bi₂Sr₂CaCu₂O_y polycrystalline superconductor with high critical temperature and density by partially melting and quench method.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 45 (12), 1131-1135, 1998

  一般社団法人 粉体粉末冶金協会

キーワード

• Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>y</SUB> polycrystalline
• partially melting method
• quench
• precursor

詳細情報

• CRID: 1390001206308190848
• NII論文ID: 10002053366
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.45.1131
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4629447
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4629447
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可