The Solution of Aluminum Phosphide in Aluminum

Abstract

The solubility of aluminum phosphide in molten aluminum was measured over the temperature range of 900°–1200°C. This was done by equilibrating molten aluminum with solid aluminum phosphide, pouring off and quenching the aluminum, and analyzing the quenched metal. The heat of solution is calculated to be 18.1 kcal. From the measured solubility, approximate dissociation pressures at different temperatures were calculated.