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US 8,409,492 B2Granted
Method for producing aluminum titanate ceramic
AssigneeNGK Insulators, Ltd.
InventorsYasushi Noguchi, Atsushi Kaneda, Takayuki Inoue, Mariko Kusabe
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Abstract
A method for producing an aluminum titanate ceramic, which comprises subjecting, to forming, a raw material for aluminum titanate formation, containing Na2O-containing α-alumina particles, to obtain a formed body and then firing the body, wherein the α-alumina particles has such a crystal structure that the ratio of the average value of the average length in axis a direction and the average length in axis b direction, to the average length H in axis c direction is 3 or more.
Claims20
A method for producing an aluminum titanate ceramic, which comprises:
- forming a raw material for aluminum titanate formation containing a titania source and Na2O-containing α-alumina particles to obtain a formed body;
- and
- then firing the formed body;
- wherein the α-alumina particles have a crystal structure wherein a ratio (D/H) of an average value of the average length in an axis a direction and an average length in an axis b direction (D), to an average length in an axis c direction (H) is in a range of 4.5 to 20.
1 more element
Dependencies are inferred from the claim text.