Intermediate-temperature diffusion welding

Details Intermediate-temperature diffusion welding Intermediate-temperature diffusion welding

1993-01-19

1994-11-08

Bradley, P. Austin

Metal fusion bonding

Process

Diffusion type

2282623, 2282626, 428672, B23K 3528, B23K 2000

Patent

active

053619714

ABSTRACT:
Two pieces (42, 46) are Joined together by providing a gold bonding layer (44) overlying a nickel layer (40) on a first piece (42) to be bonded and providing a gold bonding layer (50) on a second piece (46) to be bonded. The gold layer (50) on the second piece (46) may optionally overlie a nickel layer (48) on the second piece (46). The gold layers (44, 50) are pressed together in a facing relation at a temperature of from about 125 C. to about 250 C. for a time sufficient to permit the layers (40, 44, 50, 46) to interdiffuse.

REFERENCES:
patent: 2438967 (1948-04-01), Ellsworth
patent: 3199189 (1965-08-01), LaPlante
patent: 3970433 (1976-07-01), Warmka et al.
patent: 4737418 (1988-04-01), Slattery
patent: 4930001 (1990-05-01), Williams

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