The ceramic matrix composites (CMCs) can be fabricated by the pressure infiltration
technique. In this work it was studied porous preforms of quartzite that were infiltrated with
aluminum liquid. For to produce the more resistant preforms of quartzite, it was additioned different
quantities of bentonite (5 and 10%) and the preforms were firing at 1100°C and 1200°C. For the
composites production, the melted aluminum was introduced into preforms under a pressure of 7
MPa. The characterizations of the composites were made by X-ray diffraction, scanning electron
microscopy, and flexure strength. All the preforms studied presented sufficient strength for support
the pressing during the process of squeeze casting. The results of X-ray diffraction of composites
showed the presence of alumina, silicon and aluminum and fully interpenetration aluminum-siliconalumina
composites were obtained by infiltration.
Damage investigation and modeling of 3D woven ceramic matrix composites from X-ray tomography in-situ tensile tests