Fabrication of Aluminum Titanate - Mullite Composite with Low Thermal Expansion and High Strength

Abstract

Fabrication of strengthened aluminum titanate (AT) could be expected by alloying with mullite to achieve a small coefficient of thermal expansion (CTE) and a high strength, simultaneously. The strength and CTE of the sintered bodies were affected strongly by the property of slurry, mixing ratio of oxides and firing temperature. The body having the strength of 100MPa and CTE of 2.5×10^-6 was obtained under the prepared condition of 70wt% AT and firing temperature of 1550°C.