ALUMINUM TITANATE COMPOSITIONS, ALUMINUM TITANATE ARTICLES, AND METHODS OF MAKING SAME

摘要

A ceramic composition is disclosed comprising an inorganic batch composition comprising a magnesia source, a silica source, an alumina source, a titania source, and at least one rare earth oxide wherein the rare earth oxide comprises a particle size distribution (D₉₀) of less than 5 μm and a median particle size (D₅₀) of about 0.4 μm. A ceramic article comprising a first crystalline phase comprised predominantly of a solid solution of aluminum titanate and magnesium dititanate, a second crystalline phase comprising cordierite, a third crystalline phase comprising mullite, and a rare earth oxide, and a method of making same are disclosed.