Autocatalytic chemical deposition of zinc tin alloy

Details Autocatalytic chemical deposition of zinc tin alloy Autocatalytic chemical deposition of zinc tin alloy

1998-09-23

2000-04-04

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 125, 106 129, C23C 1848

Patent

active

060456043

ABSTRACT:
A method and a bath for autocatalytic chemical deposition of a Sn Zn alloy on a catalytic surface. The method is particularly useful in the manufacture of electronic components, when the deposition of a thin layer of Sn Zn alloy is needed before the deposition of the Sn alloy (particularly Pb free) to improve the solderability characteristics of the Cu surface. The Cu surface must be made catalytic before immersion in the autocatalytic bath, e.g. by depositing a thin film of metallic Sn.

REFERENCES:
patent: 3669854 (1972-06-01), Harbulak
patent: 5304403 (1994-04-01), Schlesinger et al.
patent: 5618402 (1997-04-01), Sakurai et al.

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