Kinetic Study on Surface Dissolution of Nitrogen on Liquid Steel by Isotope Exchange Technique

• Han Seung-Min

  Department of Metallurgical Engineering, Yonsei University

• Park Joo-Hyun

  School of Materials Science and Engineering, University of Ulsan

• Jung Sung-Mo

  Graduate Institute of Ferrous Technology (GIFT), Pohang University of Science and Technology (POSTECH)

• Park Jung-Ho

  Technical Research Laboratories, POSCO

• Min Dong-Joon

  Department of Metallurgical Engineering, Yonsei University

抄録

The kinetic study of the nitrogen dissolution into the molten steel was investigated by an isotope exchange technique. The effects of O, S, C, B, and Mn addition on surface reaction have been considered at 1873 K. Experimental results show that the rate determining step of nitrogen dissolution into molten Fe–O–S alloys would be dissociation reaction and the rate constant on bare surface of the liquid steel (k⁰) is 3.84×10⁻⁵ (mol/cm²·s·atm). The adsorption coefficients for oxygen, sulfur, and boron which were applied the dissociation determining model were calculated to be K_O=120, K_S=65, and K_B=0.9, respectively. In case of manganese addition, the rate constant can be increased with increasing the content of manganese. It seems that rate constant of bare surface of Fe–Mn alloy should be affected by addition of manganese.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 49 (4), 487-494, 2009

  一般社団法人 日本鉄鋼協会

キーワード

• kinetics
• molten steel
• nitrogen
• isotope exchange reaction
• surface dissolution
• adsorption coefficient

詳細情報

• CRID: 1390282681463612672
• NII論文ID: 10027034120
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.49.487
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational/49/4/49_4_487/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可