Thermodynamic analysis of the hydriding process of Mg–Ni alloys

A consistent set of thermodynamic functions for the Mg–Ni–H system has been developed from experimental data, and the Mg–Ni–H phase diagram has been calculated thermodynamically. The extended ternary solubility of hydrogen in Mg2Ni, the ternary compound phase Mg2NiH4, and the effect of Ni addition on the hydrogen solubility in molten magnesium have been modeled thermodynamically. The ternary solid solution phases were extrapolated from the thermodynamic descriptions of the binary edge systems. The thermodynamic functions of the Mg–Ni–H system have been applied to study the hydriding process of Mg–Ni alloys.