Publication detail

Thermal Behaviour of System SrO(1-x)CeO2-xTb4O7

Authors: Dohnalová Žaneta | Bělina Petr | Šulcová Petra | Branský Antonín

Year: 2016

Type of publication: ostatní - článek ve sborníku

Name of source: 11th International Seminar on Thermal Analysis and Calorimetry : seminar materials

Publisher name: Politechnika Warszawska Filia w Płocku

Place: Plock

Page from-to: 137-137

Titles:

Language	Name	Abstract	Keywords
eng	Thermal Behaviour of System SrO(1-x)CeO2-xTb4O7	The main aim of the research was to propose and elaborate the conditions of solid state reaction between oxides in the system SrO-(1-x)CeO2-xTb4O7 (x = 0-1) and describe the impact of synthesis conditions on the phase composition, thermal stability and colour properties of powders and their application into an organic binder. Three different approaches of solid state reaction were used for the synthesis of powders. In the first case, the initial oxide powders were homogenized in a mortar grinder for 15 minutes and subsequently calcined in air at 1000 °C for 3 hours and subsequently, after cooling, homogenization and pelleting, were calcined again at 1150 and 1300 °C (3 h). In the second case, the same procedures were used, only the atmosphere in furnace was inert (N2). In the third method, the initial oxide powders were mechanical activated in a planetary mill with agate balls (Ø 10 mm) for 5 hours and calcined in air at 1000 °C (3 h), 1150 and 1300 °C (3 h). The TG–DTA analysis of initial mixtures SrCO3, CeO2 and Tb4O7 was performed. Endothermic effect with minimum at 1171 °C indicates the formation of the perovskite SrO.CeO2 accompanied by carbon dioxide gas release and weight loss. Analysis of thermal stability of final products showed lower thermal stability of powders prepared by mechanical activation.	Perovskite Systems;Thermal Stability;Solid State Reaction

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