γ-FeにおけるNiの粒界拡散について

• 花立 有功

  大阪大学大学院

• 山本 光政

  大阪大学大学院，現在：住友重機械工業株式会社平塚研究所

• 三谷 裕康

  大阪大学工学部金属材料工学科

書誌事項

タイトル別名

• On the Grain Boundary Diffusion of Ni into γ-Fe
• ガンマ Fe ニ オケル Ni ノ リュウカイ カクサン ニ ツイテ
• On the Grain Boundary Diffusion of Ni into γ-Fe

抄録

It has been confirmed previously by the authors that the presence of Ni in the grain boundaries plays an important role in the activated sintering for Fe-Ni powder compacts. However, the grain boundary diffusion of Ni into Fe has not been clarified. In this work, the grain boundary diffusion coefficient of ⁶³Ni in bulk Fe is determined by the use of the residual-activity sectioning method in the temperature range from 1153 to 1287°C. The data obtained are analysed by the theory of grain boundary diffusion based on the instantaneous source model proposed by Suzuoka.<BR>The results are expressed as follows:<BR>Volume diffusion: D=1.09exp(−70900⁄RT) cm²/sec.<BR>Grain boundary diffusion: D′=24.1exp(−42100⁄RT) cm²/sec.<BR>The Fe-Ni mixed powder compacts at high temperatures are also observed by the use of an electron probe microanalyser, and the observed highly promoted grain boundary diffusion of Ni is confirmed to contribute to the Fe-Ni alloying in the inner part of Fe powder.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 41 (12), 1211-1216, 1977

  公益社団法人 日本金属学会

キーワード

• Materials Chemistry
• Metals and Alloys
• Mechanics of Materials
• Condensed Matter Physics

詳細情報

• CRID: 1390282681461127168
• NII論文ID: 130007337197
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.41.12_1211
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 1855361
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I1855361
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/41/12/41_12_1211/_pdf
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