EP 0180265 A1 19860507 - Method of autocatalytically tin-plating articles of copper or a copper alloy.
Title (en)
Method of autocatalytically tin-plating articles of copper or a copper alloy.
Title (de)
Verfahren zur autokatalytischen Verzinnung von Kupfer- und Kupferlegierungsgegenständen.
Title (fr)
Procédé pour l'étamage autocatalytique des objets en cuivre et alliages de cuivre.
Publication
Application
Priority
NL 8403033 A 19841005
Abstract (en)
Improvement of an electroless tin-plating method of articles of copper or of a copper alloy with a strongly alkaline solution which contains at least 0.20 mol/litre of bivalent tin ions and at least 1 mol/litre of alkalihydroxide at a temperature between 60 and 95 DEG C. The improvement consists of a pre-treatment with an acid solution of a bivalent tin salt and a complex former for Cu<+><+> and/or Sn<+><+> ions with which a layer of copper at the surface is exchanged for tin. The complex former preferably is thiourea.
IPC 1-7
IPC 8 full level
C23C 18/18 (2006.01); C23C 18/31 (2006.01)
CPC (source: EP KR)
C23C 18/31 (2013.01 - EP); C23C 18/54 (2013.01 - KR)
Citation (search report)
- [A] US 2369620 A 19450213 - SULLIVAN JOHN D, et al
- [AD] GB 2039534 A 19800813 - PHILIPS NV
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0180265 A1 19860507; EP 0180265 B1 19890419; DE 3569580 D1 19890524; JP S6191362 A 19860509; KR 860003362 A 19860523; NL 8403033 A 19860501
DOCDB simple family (application)
EP 85201585 A 19851002; DE 3569580 T 19851002; JP 21927385 A 19851003; KR 850007338 A 19851005; NL 8403033 A 19841005