R&m&-La conception genemlement admise dune structure pseudo-ordonnee des milieux ioniques fondus nous amene a approfondir l'etude de leurs proprietes thermoelectriques.
En particulier, les analogies de comportement des cristaux ioniques dans les domaines de temperature de conductivite intrinseque, et de ces memes milieux au-dessus de la temperature de fusion, suggerent l'hypothese de mecanismes de base analogues responsables du transfert de chaleur.
Cette conception entraine l'etude approfondie de la contribution au pouvoir thermc&ctrique total du pouvoir thermo&ctrique heterogene r&&ant des phenomenes d'interface. A ces phenomenes, est lie a la fois dans les deux dtats solide et liquide, l'existence d'une force electromotrice variable et importante pour un granient de temperature nul quand les electrodes de mesure sont constituees d'un metal different du cation de l%lectrolyte.
Abstract-The usual conception of a pseudo-ordered structure of ionic melts has led us to get more information about their thermoelectric properties. In particular, the analogies in behaviour of ionic crystals within the intrinsic conductivity temperature range and of the same substances above the melting point suggest the hypothesis of similarly based mechanisms responsible of heat transfer.
This conception leads to a more fundamental study of the contribution to the total thermoelectric power of the heterogeneous thermoelectric power resulting from interface phenomena. These phenomena are linked with the existence in the solid and in the liquid state of a variable emf, important in the absence of temperature gradient, when the electrodes are made of metal different from the cations of the electrolyte.