Global Patent Index - EP 1264009 A2

EP 1264009 A2 2002-12-11 - METHOD FOR APPLYING A METAL LAYER TO A LIGHT METAL SURFACE

Title (en)

METHOD FOR APPLYING A METAL LAYER TO A LIGHT METAL SURFACE

Title (de)

VERFAHREN ZUM AUFBRINGEN EINER METALLSCHICHT AUF LEICHTMETALLOBERFLÄCHEN

Title (fr)

PROCEDE POUR APPLIQUER UNE COUCHE METALLIQUE SUR DES SURFACES DE METAUX LEGERS

Publication

EP 1264009 A2 (DE)

Application

EP 01929243 A

Priority

  • DE 0100944 W
  • DE 10013298 A

Abstract (en)

[origin: DE10013298A1] Applying a metal layer to surfaces of light metals comprises electrolytically depositing on the surfaces iron from a deposition bath containing iron (II) compounds using dimensionally stable anodes soluble in the bath. The iron (II) compounds are formed in a reaction of iron (III) compounds produced during oxidation of the iron (II) compounds at the anodes. The current density is increased so that the anodic current yield for the oxidation of the iron (II) compounds to the iron (III) compounds is as large as the cathodic current yield for the iron deposition from the bath. Preferred Features: The deposition bath additionally contains hypophosphite, orthophosphite, molybdenum or tungsten compounds. The surfaces of the light metal are coated with aluminum, magnesium and/or their alloys.

IPC 1-7 (main, further and additional classification)

C25D 5/30; C22C 38/00; C25D 3/20; C25D 3/56

IPC 8 full level (invention and additional information)

C25D 5/30 (2006.01); C22C 38/00 (2006.01); C25D 3/20 (2006.01); C25D 3/56 (2006.01); C25D 7/10 (2006.01); C25D 21/12 (2006.01); C25D 21/14 (2006.01)

CPC (invention and additional information)

C22C 38/002 (2013.01); C25D 3/20 (2013.01); C25D 3/562 (2013.01)

Citation (search report)

See references of WO 0166830A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

DE 10013298 A1 20010920; DE 10013298 C2 20031030; AT 283935 T 20041215; AU 5611301 A 20010917; EP 1264009 A2 20021211; EP 1264009 B1 20041201; ES 2232618 T3 20050601; JP 2003526015 A 20030902; JP 4431297 B2 20100310; PT 1264009 E 20050429; US 2003116442 A1 20030626; US 7138043 B2 20061121; WO 0166830 A2 20010913; WO 0166830 A3 20020321

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