溶鉄-固体アルミナ間の界面物性を利用した窒化アルミニウム結晶成長

• 後藤 弘樹

  大阪大学大学院工学研究科マテリアル生産科学専攻

• 鈴木 賢紀

  大阪大学大学院工学研究科マテリアル生産科学専攻

• 田中 敏宏

  大阪大学大学院工学研究科マテリアル生産科学専攻

書誌事項

タイトル別名

• AlN Crystal Growth Using Interfacial Property between Molten Iron and Solid Alumina
• ヨウテツ-コタイ アルミナ カン ノ カイメン ブッセイ オ リヨウ シタ チッカ アルミニウム ケッショウ セイチョウ

抄録

  Various methods of aluminum nitride (AlN) crystal growth have been attempted since AlN was first recognized as a ceramic material with remarkable properties, but no efficient method has yet been established. However, AlN is a well-known inclusion in the steelmaking process, and AlN crystal growth occurs in molten steel containing Al and N. This fact indicates that the crystal growth of AlN can easily occur in liquid iron alloy, but so far the role of the liquid iron has not been elucidated. In this work, the authors propose a new mechanism for AlN growth in molten iron, in which AlN crystals nucleate and grow at the interface between liquid iron and a solid Al₂O₃ substrate to decrease the large interfacial free energy between them. To investigate the interfacial chemistry between the liquid metal and solid oxide, we successfully produced needle-like, micro-size AlN crystals at the interface of molten iron and solid alumina by blowing N₂ gas through a liquid iron alloy containing Al. We discuss the mechanism for the formation of various AlN crystal shapes at the interface between molten iron and solid alumina.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 79 (7), 356-361, 2015

  公益社団法人 日本金属学会

キーワード

• wettability
• solid oxide
• molten metal
• aluminum nitride
• crystal growth

詳細情報

• CRID: 1390001206482716416
• NII論文ID: 130005084805
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet.j2015003
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 026603442
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026603442
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/79/7/79_J2015003/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
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• 抄録ライセンスフラグ: 使用不可