Abstract
An innovative encapsulation technique designed for the DSC high temperature measurements of the volatile samples is presented in this study. Stainless steel crucibles with a screwed bolt were developed for this purpose. The technique was demonstrated on the phase diagram measurement of the NaNO 3–KNO 3 system and the obtained results are presented in this study. Up to date two thermodynamic assessments of the NaNO 3–KNO 3 phase diagram have been made, one characterized by a single eutectic point with limited solubilities in the solid state in both NaNO 3 and KNO 3 rich corners, whereas the other version prefers a continuous solid solubility with minimum on the liquidus line. Based on our results we confirm limited solubilities in the solid state.
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