| abstract |
Disclosed is a method for producing an aluminum titanate ceramic, which exhibits low thermal expansion, high mechanical strength and small dimensional change due to sintering, at a low firing temperature less than 1500 DEG C. Specifically disclosed is a method for producing an aluminum titanate ceramic, which comprises: a step wherein a ceramic plastic body containing an organic binder and a precursor mixture that contains a titanium source powder, an aluminum source powder and a silicon source powder is prepared and formed into a predetermined shape; and a step wherein the thus-formed ceramic plastic body is maintained within a temperature range of 900-1350 DEG C with a temperature change per hour of from -50 DEG C/h to +50 DEG C/h for three hours or more, and then heated to a temperature not less than 1400 DEG C and sintered at the temperature. Also specifically disclosed is an aluminum titanate ceramic sintered body which is obtained by the production method and has a porosity of 30-60%. |