Ceramic and aluminum alloy composite

Details Ceramic and aluminum alloy composite Ceramic and aluminum alloy composite

1984-06-08

1985-12-17

O'Keefe, Veronica

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428630, 428632, 428633, 428689, 428698, 428699, 420528, 75230, 423345, 501 96, 423625, H01P 2188, H05K 105

Patent

active

045592772

ABSTRACT:
A ceramic-aluminum alloy composite in which residual stress between the ceramic and aluminum components is substantially eliminated and strong cohesion is provided between the components of the composite over a wide temperature range. The composite of the invention is an integral combination of a ceramic element, a metallized layer, a cladding layer and an aluminum alloy layer. The metallized layer and the cladding layer are formed in that order on the surface of the ceramic element. The aluminum alloy layer is formed adjacent the cladding layer by pouring and solidification of a molten aluminum alloy. The metallized layer is a thin metal layer formed by any of vapor deposition of a metal, a high-melting metal method, and an activated metal method. The cladding layer is a three-layer laminated structure having top and bottom layers of Cu, Ag or Al and an intermediate layer of a metal dissimilar to the top and bottom layers. The ceramic element is preferably one of Si.sub.3 N.sub.4, SiC, Al.sub.2 O.sub.3, ZiO.sub.2, mica, LAS and crystalline glass.

REFERENCES:
patent: 3879840 (1975-04-01), Ames et al.

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