Ceramic material for use in casting reactive metals

Details Ceramic material for use in casting reactive metals Ceramic material for use in casting reactive metals

1993-11-02

1995-04-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501152, 106 389, 106 3827, C04B 3510, C04B 3544, C04B 35505

Patent

active

054098718

ABSTRACT:
An improved sintered ceramic core is used in a mold during the casting of a reactive metal. Prior to sintering, the core contains ceramic material which includes yttrium aluminate and alumina (Al.sub.2 O.sub.3). It is preferred to have the ceramic material contain between 10% and 40% yttrium aluminate. Prior to sintering, the yttrium aluminate has a mean particle size of less than 20 microns and, preferably, less than 10 microns. Particularly advantageous results has been obtained by using yttrium aluminate having a mean particle size, prior to sintering, of approximately 3 microns. It is contemplated that the ceramic material will be utilized to form other articles, such as a mold, filter, or liner for a ladle, which are exposed to reactive metals during casting.

REFERENCES:
patent: 3266893 (1966-08-01), Duddy
patent: 4040845 (1977-08-01), Richerson et al.
patent: 4063954 (1977-12-01), Brown
patent: 4097291 (1978-06-01), Huseby et al.
patent: 4097292 (1978-06-01), Huseby et al.
patent: 4108672 (1978-08-01), Klug et al.
patent: 4134777 (1979-01-01), Borom
patent: 4156614 (1979-05-01), Greskovich et al.
patent: 4164424 (1979-08-01), Klug et al.
patent: 4196769 (1980-04-01), Feagin
patent: 4331627 (1982-05-01), Yamamoto et al.
patent: 4837187 (1989-06-01), Frank et al.
patent: 4966875 (1990-10-01), Micheli et al.
patent: 4996175 (1991-02-01), Sturuis
patent: 5059388 (1991-10-01), Kihara et al.
Reed "Introduction to the Principles of Ceramic Processing" 1988 (no month).

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