Global Patent Index - EP 0435835 A3

EP 0435835 A3 19911113 - PROCESS FOR ELECTROPLATING ZINC ALLOY AND APPARATUS EMPLOYED THEREFOR

Title (en)

PROCESS FOR ELECTROPLATING ZINC ALLOY AND APPARATUS EMPLOYED THEREFOR

Publication

EP 0435835 A3 19911113 (EN)

Application

EP 90830585 A 19901214

Priority

JP 32556289 A 19891215

Abstract (en)

[origin: EP0435835A2] Disclosed herein are a process for electroplating a zinc alloy which comprises disposing in an electrolytic cell (10) a gas diffusion electrode apparatus (g) comprising a plurality of gas diffusion electrodes (1) which function as an anode and are formed by a gas diffusion layer (2) and a reaction layer (3) being attached together, and an electroconductive reinforcing frame (4) to which the gas diffusion electrodes (1) are supported; forming a zinc alloy plating bath on the reaction layer side of the electrolytic cell which functions as anode chamber; supplying electricity to the gas diffusion electrodes through the reinforcing frame while supplying a hydrogen gas to the electrolytic cell of the gas diffusion layer side; and electroplating a steel (16) with the zinc alloy by passing the steel as a cathode material through the zinc alloy bath; and an apparatus employed therefor. <IMAGE>

IPC 1-7

C25D 17/12; C25D 3/56

IPC 8 full level

C25D 5/26 (2006.01); C25D 3/56 (2006.01); C25D 7/06 (2006.01); C25D 17/10 (2006.01); C25D 17/12 (2006.01)

CPC (source: EP)

C25D 3/565 (2013.01); C25D 17/10 (2013.01)

Citation (search report)

  • [YP] EP 0346981 A1 19891220 - HOOGOVENS GROEP BV [NL]
  • [Y] US 3326723 A 19670620 - GORTON ROBERT E
  • [Y] CHEMICAL ABSTRACTS, vol. 112, no. 6, 5th February 1990, page 577, abstract no. 44303m, Columbus, Ohio, US; N. MINEO et al.: "Zinc-iron alloy plating process by using hydrogen gas diffusion electrode as anode", & HYOMEN GIJUTSU 1989, 40(9), 1037-8
  • [A] CHEMICAL ABSTRACTS, vol. 104, no. 4, 27th January 1986, page 172, abstract no. 22301s, Columbus, Ohio, US; G.M. COOK et al.: "Using fuel cells or anode depolarization to reduce electrowinning energy consumption", & ENERGY REDUCT. TECH. MET. ELECTROCHEM. PROCESSES PROC. SYMP. 1985, 285-96
  • [A] DERWENT/WPIL, accession no. 87-296109, Derwent Publications Ltd, London, GB; & JP-A-62 208 554 (TANAKA KIKINZOKU KOGYO)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0435835 A2 19910703; EP 0435835 A3 19911113; EP 0435835 B1 19940803; DE 69011304 D1 19940908; DE 69011304 T2 19941117; JP H03188299 A 19910816

DOCDB simple family (application)

EP 90830585 A 19901214; DE 69011304 T 19901214; JP 32556289 A 19891215