Ｃｕ／Ｃｏ系ナノグラニュラーバルク材料のナノ組織

• 周 成

  東京大学工学部金属工学科

• 相澤 龍彦

  東京大学工学部金属工学科

• 立沢 清彦

  東京大学工学部金属工学科

書誌事項

タイトル別名

• Nano-structure of Bulk Nano-granular Material in Cu/Co System.
• Cu Coケイ ナノグラニュラーバルク ザイリョウ ノ ナノ ソシキ

抄録

Nano-granulation process of Cu/Co system is investigated on the route of bulk mechanical alloying. Using the bulk mechanical alloying, the super-satu rated solid solution of Cu-20mol%Co has been prepared. Through the further h eat treatment, the Co nano-precipitated from the super-saturated solid solut ion in the copper matrix, resulting in appearance of the giant magneto-resis tance. In the present study, the nano-precipitation of Co and the Co-particu late size is investigated by XRD, VSM and TEM. The relationship between the magneto-resistance ratio and the nano-precipitation process of Co is investi gated. This relation depends on both the nucleation rate of Co-cluster preci pitate and the growth rate of Co-cluster. The change of the magneto-resistan ce ratio with the Co-cluster size is also obtained: Co precipitate size mus t be 1-3 nm to attain higher magneto-resistance ratio than 10%.

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), 1202-1206, 1998

  一般社団法人 粉体粉末冶金協会

キーワード

• bulk mechanical alloying
• nano-granulation
• Cu/Co
• giant magneto-resistance

詳細情報

• CRID: 1390001206308209792
• NII論文ID: 10002053506
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.45.1202
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4629459
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4629459
• 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