Stock material or miscellaneous articles – All metal or with adjacent metals – Component of composite having metal continuous phase...
Patent
1992-10-26
1993-12-07
Group, Karl
Stock material or miscellaneous articles
All metal or with adjacent metals
Component of composite having metal continuous phase...
428703, 428698, 428689, 501 94, 501127, C04B 3565
Patent
active
052682340
ABSTRACT:
Shaped, self-supporting ceramic bodies are produced by preparing a mold by applying a permeable, conformable material to a shape-defining surface of an expendable pattern. The permeable, conformable material, when set or stable, provides a mold with a shaped surface which is defined by, and is therefore substantially congruent to, the shape-defining surface. Upon heating, the material of the expendable pattern combusts or volatilizes and thus establishes the shaped cavity mold. A molten parent metal is then vaporized with a vapor-phase oxidant in such a manner as to form a ceramic body which grows into the mold cavity, and is shaped by it. The ceramic body is recovered from the mold having a shaped surface replicating the shape-defining surface of the expendable pattern.
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"Oxidation of Molten Aluminum Alloys, Reaction with Refractories"-M. Drouzy and M. Richard-Mar., 1974 Fonderie, France No. 332 pp. 121-128.
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Group Karl
Lanxide Technology Company, LP
Lewis Carol A.
Mortenson Mark G.
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