Discussion Meeting on Thermodynamics of Alloys Held in Sant Feliu de Guixols,Spain on 23-26 May 1990. Abstracts

摘要

The study of the thermodynamics of vaporization reactions by high-temperaturetechniques has always been motivated in part by the realization that the nature of the reactants and products in such reactions cannot always be inferred from measurements made on quenched samples and at lower temperatures. This is true for condensed phases as well as for the vapor species. In particular, the occurrence of solids with wide ranges of homogeneity can change the character of the net vaporization reactions. In order to determine the nature of such reactions, methods have been devised which provide information about partial and total pressures at temperature including Knudsen-effusion mass-spectrometric, torsion-effusion and mass-loss effusion. In our laboratory mass-loss and mass-spectrometric measurements are made simultaneously to provide a uniquely powerful tool for the study of incongruent, as well as congruent, vaporizations. (jes)