Process for forming mullite

Details Process for forming mullite Process for forming mullite

1979-11-06

1981-06-09

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

106 65, 106 734, 264 56, 264 61, 264 63, C01B 3336, C04B 3564

Patent

active

042725003

ABSTRACT:
A method of forming ceramic material which includes mullite (3Al.sub.2 O.sub.3.2SiO.sub.2) in any desired percentage. A particulate mixture is formed of (1) mullite in an amount of at least 5% by weight, (2) Al.sub.2 O.sub.3 in an amount to provide sufficient SiO.sub.2 to combine with Al.sub.2 O.sub.3 to form the desired mullite. The mixture is sintered to a temperature in the range of 1300.degree. C. to 1600.degree. C. wherein the Al.sub.2 O.sub.3 and SiO.sub.2 react to form mullite under the influence of the initially added mullite.

REFERENCES:
patent: 1752867 (1930-04-01), Trostel
patent: 1786482 (1930-12-01), Curtis
patent: 1802296 (1931-04-01), Willetts
patent: 3826813 (1974-07-01), Gardner et al.
patent: 3857923 (1974-12-01), Gardner et al.
patent: 3989783 (1976-11-01), McGee

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