Reaction of fluoride salts with aluminium

Abstract

The K₂TiF₆ salt required for the production of Al–Ti and Al–Ti–B master alloys was synthesised in the laboratory and the dissociation behaviour of K₂TiF₆ and KBF₄ salts at different temperatures was studied. An investigation was carried out of the mode of reaction of the salts with aluminium. The salts were found to react with aluminium directly without undergoing dissociation. The K₂TiF₆ salt reacts with aluminium only when the aluminium is molten, while the KBF₄ salt reacts with solid aluminium. In the presence of KBF₄, the reaction between K₂TiF₆ and aluminium takes place below the melting point of aluminium.

MST/3233