Process for selectively forming at least one metal or alloy coat

Details Process for selectively forming at least one metal or alloy coat Process for selectively forming at least one metal or alloy coat

1987-09-09

1989-09-12

Beck, Shrive P.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427313, 427320, 427329, 4273982, B05D 512

Patent

active

048658766

ABSTRACT:
The metal substrate (4) is coated with a coating (6) of another metal of alloy of 4-50 .mu.m thickness by deposition of a molten metal or alloy (5) through a nozzle (2), the melting temperature of this metal or alloy being lower than that of the substrate metal. This coating comports, starting from the substrate, a layer of intermetallic compound of thickness comprised between 0.5 and 4 .mu.m, within a limit not exceeding 40% of the total thickness, the remainder of the coating being formed of the initial coating metal of alloy in a proportion of 97 to 99.5% by weight.

REFERENCES:
patent: 2959829 (1960-11-01), Brennan
patent: 3201275 (1965-08-01), Alplaus
patent: 3468695 (1969-09-01), Federman
patent: 3468770 (1969-09-01), Ghose
patent: 4033398 (1977-07-01), Laithwaite
patent: 4071643 (1978-01-01), Pratt
patent: 4288476 (1981-09-01), Wald
patent: 4310572 (1982-01-01), Stavros
patent: 4596207 (1986-06-01), Witt et al.
patent: 4719962 (1988-01-01), Haour et al.

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