Activity of AlO1.5 for the CaO-AlO1.5-CeO1.5 System at 1773 K.

• Ueda Shigeru

  Graduate Student, The University of Tokyo

• Morita Kazuki

  Department of Metallurgy, The University of Tokyo

• Sano Nobuo

  Nippon Steel Corporation

Abstract

The isothermal phase relations for the CaO–AlO_1.5–CeO_1.5 system have been investigated at 1773 K by a chemical equilibration technique. Activity of AlO_1.5 in this system was also measured by equilibrating molten Cu and the CaO–AlO_1.5–CeO_1.5 flux under a controlled oxygen partial pressure. The activity coefficient of Al at infinite dilution in molten Cu was determined at 1773 K. Iso-activity curves of AlO_1.5 for the CaO–AlO_1.5–CeO_1.5 system are drawn from the experimental results. The addition of CeO_1.5 to the CaO–AlO_1.5 system was found to decrease the activity coefficient of AlO_1.5 in the melts. The effect of Ce addition to Al-killed steel was also discussed using the present results.

Journal

• ISIJ International

  ISIJ International 38 (12), 1292-1296, 1998

  The Iron and Steel Institute of Japan

Keywords

• CeO_1.5
• CaO–AlO_1.5–CeO_1.5
• deoxidizer
• thermodynamics
• activity

Details

• CRID: 1390001206451900928
• NII Article ID: 10002461562
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.38.1292
• COI: 1:CAS:528:DyaK1MXotlChtw%3D%3D
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/38/12/38_12_1292/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed