Process for preparing aluminum titanate powder and sintered body
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United States of America Patent
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Mar 6, 2001
Grant Date -
N/A
app pub date -
Aug 6, 1999
filing date -
Aug 18, 1997
priority date (Note) -
Expired
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Abstract
A process for preparing a powder of aluminum titanate, including the steps of subjecting to pressure molding a mixture of 100 parts by weight of a mixture of Al.sub.2 O.sub.3 and TiO.sub.2 at a molar ratio of the former: the latter of 1:0.95-1.05, 2 to 5 parts by weight of SiO.sub.2, 2 to 5 parts by weight of iron oxide calculated as Fe.sub.2 O.sub.3 and 1 to 3 parts by weight of a powder of an organic substance; sintering the molded product at a temperature of 1600 to 1700.degree. C. in a closed container; and pulverizing the molded product. A further process for preparing a sintered body of aluminum titanate includes the steps of molding the powder of aluminum titanate obtained by the above-mentioned process and sintering the molded product at 1450 to 1550.degree. C.
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