INVISCID MELT-SPINNING (IMS) AND PHASE IDENTIFICATION OF CAO-AL2O3-MGO FIBER

CaO-Al2O3-MgO (CAM) fibers were produced using inviscid melt spinning (IMS). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to examine a fiber morphology and identify the non-equilibri um/equilibrium phases in CAM fibers. The SEM of as-spun CAM fibers sho wed a surface roughness indicating a crystallinity and some porosity d ue to a gas evolution during fiber processing. The as-spun CAM fibers showed a formation of the non-equilibrium crystalline phases of MgO.Al 2O3, CaO.Al2O3 and alpha-Al2O3, whereas the CAM fibers heat treated at 1000-degrees-C for 24 h showed a formation of the equilibrium phases of 3CaO.5Al2O3, MgO.Al2O3 and alpha-Al2O3.