Patent ID: 9011757
Filing Date: 2015-04-21
Classification: B29C,C03C,C04B,F01N,Y10T

Abstract:
1. A method for producing an aluminum-titanate-based ceramic honeycomb structure, comprising the steps of mixing 100 parts by mass of a powder material comprising alumina powder containing 0.05-0.5% by mass of Na 2 O and titania powder containing 0.5% or less by mass of Na 2 O at a molar ratio of 47/53 to 53/47, with at least 1-6 parts by mass of silica powder and 0.5-5 parts by mass of magnesia source powder having an average particle size of 5 μm or less; molding the mixed powder material to a honeycomb structure; heating the resultant molding at an average speed of 10° C./hr to 100° C./hr in a temperature range of 1300° C. to 1350° C.; and sintering it at the highest keeping temperature of 1400-1650° C. to obtain an aluminum-titanate-based ceramic honeycomb structure comprising at least main crystals of aluminum titanate, in which MgO and SiO 2 are dissolved to form a solid solution, and glass phases.