| abstract |
Disclosed is a process for producing aluminum magnesium titanate that can produce aluminum magnesium titanate having a low coefficient of thermal expansion at a firing temperature below 1500°C. The process is characterized by comprising holding a precursor mixture containing a titania source powder, an alumina source powder, a magnesia source powder, and a silica source powder in a temperature range of 1100°C to 1350°C for not less than 3 hr, then raising the temperature of the mixture to a temperature of 1400°C or above, and firing the mixture at that temperature. The silica source powder is preferably an alkali feldspar powder. An aluminum magnesium titanate powder can be produced by obtaining aluminum magnesium titanate according to the production process and disintegrating the aluminum magnesium titanate. |