Some Elements of Equilibrium Diagrams for Systems of Iron with Water above 100°C and with Simple Chloride, Carbonate and Sulfate Melts

摘要

This report is based on the text of one of a number of papers published together by former pupils of Professor H. M. N. H. Irving in commemoration of his retirement. In it some aspects of molten salts relevant to the nuclear power industry are discussed briefly and an approach is presented to the theoretical description of the electrochemical thermodynamics of corrosion, mass-transport and deposition processes in power-plant working on the water-cycle, and in homogenous molten-salt reactors. Diagrams are introduced, based on the parameter Pe instead of the usual redox potential, that are useful for illustrating equilibrium data for aqueous systems at elevated temperatures and for molten salts. Systems including iron in water and in the eutectic mixtures of lithium and sodium chloride, carbonate and sulfate, are taken as examples.