Dense mullite-zirconia-zirconium titanate ceramic composites by reaction sintering

摘要

Materials from the Al2O3-SiO2-ZrO2 and the Al2O3-SiO2-ZrO2-TiO2 systems have several high temperature applications because they present the good refractoriness, chemical inertness, adequate mechanical and thermo-mechanical behaviors with a relatively good cost: performance ratio. In this work stoichiometric (3:2:1) molar incompatible mixtures of alumina (Al2O3), zircon (ZrSiO4) and titania (TiO2) were slip casted and sintered in a 1300-1500 degrees C temperature range in order to obtain mullite (3Al(2)O(3)center dot 2SiO(2)), zirconia (ZrO2) and zirconium titanate (ZrTiO4) dense triple ceramic composite.