Direct bonding of copper composites to ceramics

Metal fusion bonding – Process – Metal to nonmetal with separate metallic filler

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228198, 2282626, B23K 3100

Patent

active

054906270

ABSTRACT:
A ceramic member (52) is direct-bonded to a copper composite substrate (58) by heating to diffuse copper to the surface (56) of the copper composite substrate, oxidizing the surface of the copper composite substrate following heating, placing a ceramic member in contact with the resulting oxidized substrate, and forming a copper-copper oxide eutectic (54) at the interface between the copper composite substrate and the ceramic member by heating. The eutectic, upon cooling, forms a bond between the copper composite and the ceramic.

REFERENCES:
patent: 3766634 (1973-10-01), Babcock et al.
patent: 4505418 (1985-03-01), Neidig et al.
patent: 4563383 (1986-01-01), Kuneman et al.
patent: 4954386 (1990-09-01), Mizunoya et al.
patent: 5176309 (1993-01-01), Horiguchi et al.

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