EP 0357326 A3 19901024 - INHIBITING CORROSION OF LEAD OR LEAD-ALLOY ANODES IN A CHROMIUM ELECTROPLATING BATH
Title (en)
INHIBITING CORROSION OF LEAD OR LEAD-ALLOY ANODES IN A CHROMIUM ELECTROPLATING BATH
Publication
Application
Priority
- US 23760788 A 19880826
- US 35573789 A 19890522
Abstract (en)
[origin: EP0357326A2] To inhibit anode corrosion, electroplating apparatus includes an anode protection circuit with an auxiliary power supply (5) for applying a protective potential, less than the plating potential and at a much lower current, to the anode (1). The protective potential is desirably applied through an auxiliary cathode (2) near the anode (1), and advantageously is left on when plating is not taking place.
IPC 1-7
IPC 8 full level
C25D 11/38 (2006.01); C23F 13/00 (2006.01); C25D 3/04 (2006.01); C25D 5/00 (2006.01); C25D 17/10 (2006.01); C25D 17/12 (2006.01)
CPC (source: EP KR)
C23F 13/005 (2013.01 - EP); C25D 3/04 (2013.01 - EP); C25D 17/00 (2013.01 - KR)
Citation (search report)
- [X] US 4062741 A 19771213 - HARAYAMA AKIRA
- [A] GB 1148070 A 19690410 - M & T CHEMICALS INC [US]
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0357326 A2 19900307; EP 0357326 A3 19901024; CN 1040633 A 19900321; JP H02310397 A 19901226; KR 900003422 A 19900326
DOCDB simple family (application)
EP 89308528 A 19890823; CN 89106765 A 19890825; JP 22140089 A 19890828; KR 890012162 A 19890825