Patent ID: 9272957
Filing Date: 2016-03-01
CPC Classification: C04B

Claim Text:
1. A process for producing an aluminum titanate-based ceramics fired body comprising a shaping step to obtain a ceramics shaped body comprising shaping a starting material mixture containing inorganic components comprising an aluminum source powder and a titanium source powder and organic components; a degreasing step comprising removing the organic components contained in the ceramics shaped body in an atmosphere with an oxygen concentration of not higher than 0.1% and under the temperature condition that the highest temperature is not lower than 700° C. and not higher than 1100° C.; and a firing step comprising firing the ceramics shaped body under the temperature condition that the highest temperature is not lower than 1300° C.; in this order, wherein the atmosphere at a heating step to 1300° C. during the firing step has an oxygen concentration of not lower than 1% and not higher than 6%.