THERMODYNAMIC PROPERTIES OF LIQUID MAGNESIUM-NICKEL ALLOYS

Magnesium vapor pressures were determined over liquid Mg-Ni alloys for compositions x(Mg) > 0.65 using an isopiestic method. Data points bet ween 760 and 890 degrees C were evaluated to derive corresponding part ial thermodynamic properties. The composition dependence of the magnes ium activities in liquid alloys is shown for a temperature of 1073 K. Additionally, it is possible td obtain the shape of the liquidus curve between about 60 and 70 at% Mg from the results of the isopiestic mea surements.