SINTERING BEHAVIOR OF TAPE-CAST CMAS GLASS-CERAMIC REINFORCED WITH ALUMINA CHOPPED FIBERS

The sintering behaviour of CMA S glass-ceramic and CMAS glass-ceramic/alumina chopped fibre (20 wt%) composites was studied at different temperatures, ranging. from 800 to 1000-degrees-C, using scanning electron microscopy (SEM), X-ray diffraction analysis (XRD) and porosimetry investigations. The evaluation of linear shrinkage, density and porosity were sufficient to define the best sintering conditions, while SEM and XRD allowed the nature of the matrix/fibre interface to be studied.