Analytical Study of the Growth and Formation Processes of Faceted 123 Crystals in Superconductive REBCO Oxide

• Mori Nobuyuki

  Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University

• Ogi Keisaku

  Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University

抄録

Growth process and solidification structures of REBCO (RE=Y, Nd etc.) fabricated by conventional unidirectional solidification and infiltration-growth method were studied analytically and numerically to clarify growth and structure-formation mechanism of faceted 123 crystals. The change in freezing front temperature of 123 phase during unidirectional solidification and the critical transition conditions of macrostructures from columnar to equiaxed structures were analyzed by using the growth rate (R)-undercooling (ΔT) and the cooling rate (V_c)-ΔT relations. The formation process of microstructure of faceted 123 crystal was simulated by two-dimensional numerical method. The results on the formation of solidification structures obtained by the above analysis and simulation showed good agreements with the experimental ones.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 46 (5), 930-934, 2005

  公益社団法人 日本金属学会

キーワード

• superconductor
• crystal growth
• interface temperature
• simulation
• YBCO
• REBCO
• peritectic
• facet

詳細情報

• CRID: 1390001204249536256
• NII論文ID: 130004452803
• NII論文ID: 10015701793
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.46.930
• COI: 1:CAS:528:DC%2BD2MXmtl2mtL0%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7316201
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7316201
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/46/5/46_5_930/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可