A DSC study of the NaNO3-KNO3 system using an innovative encapsulation technique

被引：83

作者：

Benes, O. ^{[1
]}

Konings, R. J. M. ^{[1
]}

Wurzer, S. ^{[1
]}

Sierig, M. ^{[1
]}

Dockendorf, A. ^{[1
]}

机构：

[1] European Commiss, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany

来源：

THERMOCHIMICA ACTA | 2010年 / 509卷 / 1-2期

关键词：

Phase diagram; DSC; Encapsulation; Alkali nitrates; LIMITED SOLID-SOLUTIONS; POTASSIUM-NITRATE; SODIUM-NITRATE; MIXED-CRYSTALS; HEAT-CAPACITIES; BINARY-SYSTEMS; PHASE-DIAGRAMS; LIQUIDUS; CURVE; MIXTURES;

D O I：

10.1016/j.tca.2010.06.003

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

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 NaNO3-KNO3 system and the obtained results are presented in this study. Up to date two thermodynamic assessments of the NaNO3-KNO3 phase diagram have been made, one characterized by a single eutectic point with limited solubilities in the solid state in both NaNO3 and KNO3 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. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：62 / 66

页数：5

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