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Calorimetric study of selected NZP-type of ceramic materials
Ist Teil von
Journal of alloys and compounds, 2003-03, Vol.351 (1), p.212-216
Ort / Verlag
Lausanne: Elsevier B.V
Erscheinungsjahr
2003
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Sodium zirconium phosphate, NZP, ideally NaZr
2(PO
4)
3, is a potential host matrix for nuclear waste. Thermophysical properties of these materials are necessary to assess the thermal stability of these compounds. This paper presents the synthesis and calorimetric measurements of some NZP-type compounds containing alkaline earth elements. It also describes the indigenously developed room temperature drop calorimeter for low temperature calorimetric measurements. Calibration of the instrument is done with standard reference materials. Enthalpy increment of these materials is measured using this setup in the temperature range 373–873 K, and specific heat data are derived. Temperature dependence of enthalpy increment and specific heat of these materials, and the influence of the chemical composition on these properties are discussed.