Global Patent Index - EP 1770188 A4

EP 1770188 A4 20080723 - METHOD OF FORMING ANTICORROSION COATING

Title (en)

METHOD OF FORMING ANTICORROSION COATING

Title (de)

VERFAHREN ZUR AUSBILDUNG EINER ANTIKORROSIONSBESCHICHTUNG

Title (fr)

PROCEDE D"ELABORATION D"UN REVETEMENT ANTICORROSION

Publication

EP 1770188 A4 20080723 (EN)

Application

EP 05736723 A 20050428

Priority

  • JP 2005008133 W 20050428
  • JP 2004140715 A 20040511

Abstract (en)

[origin: EP1770188A1] Anticorrosive coating is formed cheaply and in a short period, which facilitates its general application to marine steel structures. A steel caisson 1 is used as a cathode, an undersea member 3 arranged in seawater and opposed to the steel caisson 1 is used as anode. Direct current is passed between the electrodes so that anticorrosive coating 8 is formed on the steel caisson 1 through electrolytic reaction of the seawater, thereby attaining anticorrosion. The electric current is passed between the electrodes such that coating 7 with magnesium hydrate as dominant constituent is formed on the steel caisson 1 to have a predetermined thickness; then, supply of the electric current is stopped. Thus, anticorrosive coating 8 is formed through compositional substitution effect of substituting calcium carbonate for the magnesium hydrate in the presence of seawater.

IPC 8 full level

C23F 15/00 (2006.01); E02D 31/06 (2006.01); C23F 13/02 (2006.01); C25D 9/10 (2006.01); E02D 5/64 (2006.01)

CPC (source: EP US)

C25D 9/10 (2013.01 - EP US); E02D 5/64 (2013.01 - EP US); C23F 2213/31 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE DK GB NL

DOCDB simple family (publication)

EP 1770188 A1 20070404; EP 1770188 A4 20080723; JP 2005320602 A 20051117; JP 4424059 B2 20100303; NO 20065301 L 20061117; US 2008029401 A1 20080207; WO 2005108645 A1 20051117

DOCDB simple family (application)

EP 05736723 A 20050428; JP 2004140715 A 20040511; JP 2005008133 W 20050428; NO 20065301 A 20061117; US 54747505 A 20050428