PHASE EQUILIBRIA IN THE SYSTEM PB-S-O.

Abstract

PHASE EQUILIBRIA IN THE SYSTEM PB-S-O WERE INVESTIGATED IN THE TEMPERATURE RANGE 600 TO 1050 D. C AT ONE ATMOSPHERIC PRESSURE. NINE UNIVARIANT EQUILIBRIA WERE DETERMINED BY THE MEASUREMENTS OF THE EQUILIBRIUM OXYGEN PARTIAL PRESSURES USINGGALVANIC CELL. A CONSISTENT POTENTIAL PHASE DIAGRAM FOR THESYSTEM WAS CONSTRUCTED BASED ON THE PRESENT EXPERIMENTAL RESULTS AND AVAILABLE THERMOCHEMICAL RELATIONS. IN JAPANESE WITH ENGLISH ABSTRACT.