Sintered form body
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United States of America Patent
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Jan 23, 1990
Grant Date -
N/A
app pub date -
Dec 3, 1987
filing date -
Feb 26, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a starting mixture for the preparation of a sintered body on a basis of aluminum titanate consists of more than 46 wt.-% TiO.sub.2, up to 49.5 wt.-% Al.sub.2 O.sub.3, 3 to 5 wt.-% quartz, and less than 0.2 wt.-% impurities, Al.sub.2 O.sub.3 and TiO.sub.2 being present in the weight ratio of 1:0.95 to 1:1.05. The sintered body according to the invention is composed of: 15 to 35 wt.-% TiO.sub.2 ; 60 to 85 wt.-% Al.sub.2 TiO.sub.5 (aluminum titanate); up to 5 wt.-% Al.sub.2 O.sub.3 ; up to 17 wt.-% Mullite; and max. 0.2 wt.-% impurities, all parts by weight together totaling 100 wt.-%. Also disclosed are processes for making the sintered body.
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