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|Title:||Kinetic study of crystallisation of sol-gel derived calcia-alumina binary compounds|
|Keywords:||Binary compound;C12A7;FTIR;HTXRD;Kissinger equation;Raman spectroscopy|
|Citation:||Journal of Alloys and Compounds, 582: 277 - 282, (January 2014)|
|Abstract:||In-situ High Temperature X-ray Diffraction (HTXRD) and Differential Scanning Calorimetric (DSC) studies were performed on a sol-gel derived binary compound of a calcia-alumina (C12A7) system consisting of calcium oxide (CaO) and aluminium oxide (Al2O3) in a ratio of 12:7 for in situ investigation into the phase transformations under progressively increasing thermal activation from roomerature to 1200 °C. The crystallisation of amorphous samples formulated at roomerature on magnesium oxide (MgO) single crystal (100) substrates was found to be complete on heat treatment at 1100 °C for 3 h. This observation was further supported by independent Fourier Transform Infrared (FTIR) and Raman Spectroscopies. Values of 348 kJ/mol and 375 kJ/mol were estimated from Kissinger plots for activation energies of crystallisation of CaO and Al2O3 constituents, respectively.|
|Appears in Collections:||Wolfson Centre for Materials Processing|
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