The ternary Ga-NiSb system: Invariant reactions and liquidus surface

The phase relationships for Ga-Ni-Sb alloys were determined by means of dif ferential thermal analyses along ten selected isopleths through the ternary system. From these the sequence of invariant reactions involving the liqui d phase was derived in terms of a Scheil diagram. Furthermore, a projection of the liquidus surface was constructed for the entire composition range. It contains a total of nine invariant four-phase reactions, seven of the tr ansition type and two of the eutectic type. Together with the isothermal se ctions at 900, 600, and 500 degreesC that were presented earlier this resul ts in a full description of the phase equilibria in the ternary Ga-Ni-Sb sy stem as a function of composition and temperature.