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1. WO2000026437 - VISIBLE CHROMIUM- AND PHOSPHORUS-FREE CONVERSION COATING FOR ALUMINUM AND ITS ALLOYS

Publication Number WO/2000/026437
Publication Date 11.05.2000
International Application No. PCT/US1999/023989
International Filing Date 29.10.1999
Chapter 2 Demand Filed 16.03.2000
IPC
C23C 22/34 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05using aqueous solutions
06using aqueous acidic solutions with pH < 6
34containing fluorides or complex fluorides
CPC
C23C 22/34
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05using aqueous solutions
06using aqueous acidic solutions with pH less than 6
34containing fluorides or complex fluorides
Applicants
  • HENKEL CORPORATION [US]/[US] (AllExceptUS)
  • CARLSON, Lawrence, R. [US]/[US] (UsOnly)
  • SCALERA, Patrick, A. [US]/[US] (UsOnly)
  • NIEMI, Therese [US]/[US] (UsOnly)
  • DOLAN, Shawn [US]/[US] (UsOnly)
Inventors
  • CARLSON, Lawrence, R.
  • SCALERA, Patrick, A.
  • NIEMI, Therese
  • DOLAN, Shawn
Agents
  • WISDOM, Norvell, E.
Priority Data
60/106,35330.10.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VISIBLE CHROMIUM- AND PHOSPHORUS-FREE CONVERSION COATING FOR ALUMINUM AND ITS ALLOYS
(FR) COUCHE DE CONVERSION VISIBLE EXEMPTE DE CHROME ET DE PHOSPHORE POUR L'ALUMINIUM ET SES ALLIAGES
Abstract
(EN)
A visible colored chromium- and phosphorus-free conversion coating can be formed on a metal surface by contacting it with an aqueous liquid composition that comprises an alizarine dye and a product of chemical interaction between a first initial reagent component selected from the group consisting of fluoroacids of the elements titanium, zirconium, hafnium, boron, aluminum, silicon, germanium, and tin; and a second initial reagent component selected from the group consisting of titanium, zirconium, hafnium, boron, aluminum, silicon, germanium, and tin and all of oxides, hydroxides, and carbonates of all of titanium, zirconium, hafnium, boron, aluminum, silicon, germanium, and tin.
(FR)
Une couche de conversion visible colorée exempte de chrome et de phosphore peut être formée sur une surface métallique par mise en contact de ladite surface avec une composition aqueuse liquide qui comprend un colorant d'alizarine et un produit d'interaction chimique entre un premier réactif initial choisi dans le groupe constitué de fluoroacides des éléments titane, zirconium, hafnium, bore, aluminium, silicium, germanium et étain, et un second réactif initial choisi dans le groupe constitué de titane, zirconium, hafnium, bore, aluminium, silicium, germanium et étain et de tous les oxydes, hydroxydes et carbonates de tous les éléments du groupe constitué de titane, zirconium, hafnium, bore, aluminium, silicium, germanium et étain.
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