EP 0493479 B1 19940427 - IMPROVEMENTS IN OR RELATING TO THE ELECTRODEPOSITION OF ZINC OR ZINC ALLOY COATINGS.
Title (en)
IMPROVEMENTS IN OR RELATING TO THE ELECTRODEPOSITION OF ZINC OR ZINC ALLOY COATINGS.
Title (de)
ELEKTROPLATTIERUNG VON ZINK- ODER ZINKLEGIERUNGSBESCHICHTUNGEN.
Title (fr)
AMELIORATIONS RELATIVES AU DEPOT ELECTROLYTIQUE DE REVETEMENTS EN ZINC OU EN ALLIAGE DE ZINC.
Publication
Application
Priority
- GB 8921439 A 19890922
- GB 9001433 W 19900918
Abstract (en)
[origin: WO9104359A1] A method for the electrodeposition onto a substrate of a coating of zinc and/or a zinc alloy which method comprises immersing in an electrolyte which contains ferrous ions and zinc ions at a pH of below 1.0, a non-consumable anode which is resistant to corrosion by ferric ions and the substrate which acts as the cathode, passing an electric current therebetween, the reaction at the anode comprising the conversion of ferrous ions to ferric ions, and concurrently with or after the electrodeposition passing the electrolyte to one or more regenerating tanks comprising metallic iron and/or metallic zinc as feedstock, the rate of dissolution of the feedstock being dependent upon the concentration of ferric ions in solution.
IPC 1-7
IPC 8 full level
C25D 3/56 (2006.01); C25D 21/14 (2006.01)
CPC (source: EP)
C25D 3/565 (2013.01); C25D 21/14 (2013.01)
Citation (examination)
- PATENT ABSTRACTS OF JAPAN vol. 011, no. 185 (C - 428)<2632> 13 June 1987 (1987-06-13)
- PATENT ABSTRACTS OF JAPAN vol. 007, no. 273 (C - 198)<1418> 6 December 1983 (1983-12-06)
- PATENT ABSTRACTS OF JAPAN vol. 012, no. 122 (C - 488)<2969> 15 April 1988 (1988-04-15)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9104359 A1 19910404; DE 69008537 D1 19940601; EP 0493479 A1 19920708; EP 0493479 B1 19940427; GB 8921439 D0 19891108
DOCDB simple family (application)
GB 9001433 W 19900918; DE 69008537 T 19900918; EP 90914540 A 19900918; GB 8921439 A 19890922