SETARAM Instrumentation (Caluire, France) is a leading manufacturer and supplier of high-performance thermal analyzers, calorimeters, gas sorption and high pressure mass spectroscopy instruments and offers complete and dedicated solutions for different applications such as Pharmaceuticals & Life Science, Advanced Materials, Energy, Process Safety, etc.

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October 13, 2015 - October 13, 2015

Thermal Analysis and Calorimetry Applied to the Studies of Ceramics and Glasses

Ver en Español!WHEN: October 13, 2015 at 10:00am EDT

The mechanical, thermal, and thermodynamic properties of ceramics, glasses and nanocomposites can be studied using a wide range of techniques. The Thermogravimetrical analysis is a preferred method to characterize these materials, to determine the amount of impurities, to investigate how different thermal treatments would affect their stability and properties. On the other hand, the Thermomechanical analysis technique provides important information related to the sintering behavior of ceramics. The study of nano Yttria-stabilized Zirconia, MWCNTs and hydroxyapatite composites will be presented as examples. Another example is the viscosity of Ba–B–Si–Al–O glass, which was determined by indentation creep test.  Differential scanning calorimetry was the chosen technique to investigate the thermal stability of glass ceramics derived from FGRP (Fiberglass Reinforced Plastics) waste and to obtain the activation energy of the crystallization process. Ultra-high temperature Differential thermal analysis (up to 2400 C) allowed to investigate the phase transitions and heat of fusion of Lanthana, Zirconia and Yttria which could not be obtained otherwise.

The 3D Calvet sensor provides the most accurate data for heat capacity measurements (examples: calcium copper titanate, barium disilicate) from room temperature to 1600 C. The glass transition and the heat of crystallization and melting of barium disilicate was determined by TG-DSC between room temperature and 1130 C.  High temperature oxide melt solution calorimetry is the most direct method to study the enthalpies of formation of complex compounds (calcium copper titanate and barium disilicate glass and crystal phases), the heat of vitrification of glasses and the enthalpies of transformation of phases stable at room temperature. The thermokinetics of the hydration process of calcium phosphate cement (hydroxyapatite) using a mixture of alfa-tricalcium phosphate and dicalcium phosphate dehydrate and a citric acid buffer was measured by isothermal calorimetry at close to room temperature using a 3D Calvet type sensor with high sensitivity and the enthalpy of the mixing was obtained.


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