Method and apparatus for applying metal cladding on surfaces and

Details Method and apparatus for applying metal cladding on surfaces and Method and apparatus for applying metal cladding on surfaces and

1986-02-13

1987-12-22

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 34, 427 541, 427423, B05D 106, B05D 108

Patent

active

047146230

ABSTRACT:
Small, preferably micronsized hollow glass or ceramic or carbon spheres (or a mix thereof) sprayed into a uncured or wet resin material which is formed into a layer and after curing of the resin layer, it is abraded, sand or grit blasted so as to rupture the outermost layer of spheres or voids to provide a plurality of anchor sites undercuts or nooks and crannies. A thermally sprayed metal, such as copper, becomes embedded into the undercuts, nooks and crannies, such that the bond or adherent strength is greatly improved. This micronsized glass, ceramic carbon spheres and/or pores greatly increases the bond strength by providing better undercuts in the surface to be sprayed by molten metal and provide the capability of depositing thicker layers without jeopardizing the bond.

REFERENCES:
patent: 819125 (1906-05-01), Coleman
patent: 3097932 (1963-07-01), Goldheim
patent: 3144349 (1964-08-01), Swingler et al.
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patent: 3325303 (1967-04-01), Lant et al.
patent: 3476577 (1969-11-01), Davie
patent: 3775157 (1973-11-01), Fromson
patent: 4182641 (1980-01-01), Fitts
patent: 4226906 (1980-10-01), Jacob
patent: 4303730 (1981-12-01), Torobin
patent: 4307142 (1981-12-01), Blittstein et al.

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