Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AlF{sub 3} and NaF-AlF{sub 3} melts

Journal Article · Wed Dec 01 00:00:00 EST 1993 · Metallurgical Transactions, B

DOI:https://doi.org/10.1007/BF02660986· OSTI ID:142335

Lee, M S ^[1]; Terry, B S; Grieveson, P ^[2]

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1. BHP Research, Newcastle (Australia)
2. Imperial Coll., London (United Kingdom). Dept. of Materials

The interfacial phenomena occurring during the contacting of liquid Al-B, Al-Ti-B, and Al-Zr-B melts with KF-AlF{sub 3} liquid fluxes have been investigated by optical examination of quenched metal drops previously immersed in the liquid fluxes. Reactions in the Al-B/KF-AlF{sub 3} system involve the formation of metastable AlB{sub 12} at the metal/flux interface. At high KBF{sub 4} levels in the flux, the AlB{sub 12} is dispersed in the flux and also at low KBF{sub 4} levels in the metal. Reactions in the Al-Ti-B/KF-AlF{sub 3} system involve the formation of TiB{sub 2}, which may be dispersed in either the metal or the flux depending upon the composition of the flux. The results obtained for the Al-Ti-B/NaF-AlF{sub 3} and Al-Zr-B/KF-AlF{sub 3} systems were similar to those observed for the Al-Ti-B/KF-AlF{sub 3} system.

• Sponsoring Organization: USDOE
• OSTI ID: 142335
• Journal Information: Metallurgical Transactions, B, Vol. 24B, Issue 6; Other Information: PBD: Dec 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
FABRICATION
CHEMICAL REACTIONS
BORON ALLOYS
TITANIUM ALLOYS
ZIRCONIUM ALLOYS
POTASSIUM FLUORIDES
ALUMINIUM FLUORIDES
SODIUM FLUORIDES
WETTABILITY
EMULSIFICATION
PRECIPITATION
IMPURITIES
EXPERIMENTAL DATA