Phase transformation of calcia-alumina-magnesia fibres produced by inviscid melt spinning |
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| Authors: | Yun -Mo Sung S. A. Dunn |
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| Affiliation: | (1) Departments of Materials Science and Engineering, University of Wisconsin-Madison, 53706 Madison, WI, USA;(2) Departments of Chemical Engineering, University of Wisconsin-Madison, 53706 Madison, WI, USA;(3) Present address: Department of Materials and Engineering, Daejin University, Pochun-kun, 487-800 Kyungki-do, Korea |
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| Abstract: | CaO-Al2O3-MgO (CAM) ceramic fibre produced via inviscid melt spinning (IMS) was investigated for phase transformation. Differential thermal analysis (DTA) on the as-spun CAM fibre gave two transformation peaks, one for exothermic peak at around 927°C and the other for endothermic one at around 1100°C. In order to identify each phase transformation x-ray diffraction (XRD) analysis was performed on the CAM fibres heat-treated to each phase transformation completion temperature. The exothermic peak was determined to represent crystallization of remaining amorphous phase in the as-spun CAM fibre. The endothermic peak was determined to correspond to transformation of non-equilibrium CaO · Al2O3 phase to equilibrium 3CaO· 5Al2O3 phase. |
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