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Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AIF3 and NaF-AIF3 melts

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Abstract

The interfacial phenomena occurring during the contacting of liquid Al-B, Al-Ti-B, and Al-Zr-B melts with KF-AlF3 liquid fluxes have been investigated by optical examination of quenched metal drops previously immersed in the liquid fluxes. Reactions in the Al-B/KF-AlF3 system involve the formation of metastable AlB12 at the metal/flux interface. At high KBF4 levels in the flux, the AlB12 is dispersed in the flux and also at low KBF4 levels in the metal. Reactions in the Al-Ti-B/KF-AlF3 system involve the formation of TiB2, which may be dis-persed in either the metal or the flux depending upon the composition of the flux. The results obtained for the Al-Ti-B/NaF-AlF3 and Al-Zr-B/KF-AlF3 systems were similar to those ob-served for the Al-Ti-B/KF-AlF3 system.

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Authors and Affiliations

  1. BHP Research, Newcastle, Australia

    M. S. Lee (Research Officer)

  2. Department of Materials, Imperial College, SW7 2BP, London, UK

    B. S. Terry (Lecturer) & P. Grieveson (Professor of Applied Metallurgy)

Authors
  1. M. S. Lee
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  2. B. S. Terry
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  3. P. Grieveson
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Additional information

M. S. LEE, formerly Graduate Student, Department of Materials, Imperial College, London

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Lee, M.S., Terry, B.S. & Grieveson, P. Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AIF3 and NaF-AIF3 melts. Metall Trans B 24, 947–953 (1993). https://doi.org/10.1007/BF02660986

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  • DOI: https://doi.org/10.1007/BF02660986

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