EP 1738000 A2 20070103 - PRODUCTION OF A STRUCTURED HARD CHROMIUM LAYER AND PRODUCTION OF A COATING
Title (en)
PRODUCTION OF A STRUCTURED HARD CHROMIUM LAYER AND PRODUCTION OF A COATING
Title (de)
HERSTELLUNG EINER STRUKTURIERTEN HARTCHROMSCHICHT UND HERSTELLUNG EINER BESCHICHTUNG
Title (fr)
PRODUCTION D'UNE COUCHE DE CHROME DUR STRUCTUREE ET PRODUCTION D'UN REVETEMENT
Publication
Application
Priority
- EP 2005000037 W 20050105
- DE 102004019370 A 20040421
Abstract (en)
[origin: DE102004019370B3] Production of a structurized hard chrome layer involves deposition on a workpiece from an electrolyte (I) containing (a) chromium(VI) compound in an amount corresponding to 50-300 g/l chromium(VI) oxide, (b) 0.5-10 g/l sulfuric acid and (c) 5-15 g/l 1-6 carbon aliphatic sulfonic acid but no ammonium or alkali(ne earth) molybdate, vanadate or zirconate, operating with a cathodic current yield of 12% or less. Independent claims are also included for the following: (1) the structurized hard chrome layer per se; (2) coating process, involving depositing a structurized hard chrome layer on a workpiece and applying a composition containing epoxide resin and a solid lubricant (II) and/or hard substance (III) to this; (3) the coating per se; (4) electrolyte (I) per se.
IPC 8 full level
C25D 3/10 (2006.01); C25D 5/12 (2006.01); C25D 5/14 (2006.01); C25D 5/48 (2006.01); C25D 11/38 (2006.01); C25D 15/02 (2006.01)
CPC (source: EP US)
C25D 3/10 (2013.01 - EP US); C25D 5/12 (2013.01 - EP US); C25D 5/48 (2013.01 - EP US); C25D 5/627 (2020.08 - EP US)
Citation (search report)
See references of WO 2005108648A2
Designated contracting state (EPC)
AT DE FR GB IT PT
DOCDB simple family (publication)
DE 102004019370 B3 20050901; BR PI0506445 A 20061226; BR PI0506445 B1 20150414; EP 1738000 A2 20070103; EP 1738000 B1 20180418; JP 2007533852 A 20071122; JP 4542134 B2 20100908; PT 1738000 T 20180703; US 2008060945 A1 20080313; US 8110087 B2 20120207; WO 2005108648 A2 20051117; WO 2005108648 A3 20060330
DOCDB simple family (application)
DE 102004019370 A 20040421; BR PI0506445 A 20050105; EP 05700700 A 20050105; EP 2005000037 W 20050105; JP 2007508737 A 20050105; PT 05700700 T 20050105; US 58711705 A 20050105