SiC Fiber-Reinforced Glass—Ceramic Composites in the Zirconia/Magnesium Aluminosilicate System

Glass-ceramic matrix compositions derived from metal alkoxides were vacuum hot-pressed. The compositions were nominally cordierite, with variations in silica content, and additions of up to 30% zirconia. Composites fabricated by vacuum hot-pressing the matrix compositions with SiC Nicalon® fibers were also studied. Variations in pressing conditions and subsequent heat treatments were examined. Crystalline phase development, bend strength and fracture toughness were evaluated as a function of hot-pressing parameters.