Coating processes – Immersion or partial immersion – Metal base
Patent
1991-04-23
1992-09-15
Beck, Shrive
Coating processes
Immersion or partial immersion
Metal base
427437, 4274431, 427304, 427305, 427306, C23C 2600
Patent
active
051476924
ABSTRACT:
Conductive surfaces such as copper and/or tungsten surfaces, particularly copper circuitry areas of printed circuit board substrates or fused tungsten circuitry areas of fused tungsten-ceramic packages, are activated for receipt of electroless nickel plating thereon by providing the surfaces with particulate zinc metal, particularly by contact of the surfaces with an aqueous suspension of particulate zinc metal.
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Beck Shrive
Dang Vi Duong
MacDermid Incorporated
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