Actinide nitrides and nitride-halides in high-temperature systems

Knowledge of high-temperature actinide mononitrides systems has been extended in two fields. Systematics of the evaporation behavior of actinide mononitrides, including NpN and AmN, are discussed in view of recent experimental data. Secondly, for electrochemical data for the U-N-Cl system in molten salts let us consider equilibria in ternary systems containing halogens. The vaporization behavior of mononitrides together with other equilibrium relationships are described using a sublattice formalism, where the structural vacancy in the nitrogen sublattice is taken into account. (C) 1998 Elsevier Science S.A.