POST-TREATMENT FOR METAL COATED SUBSTRATES

Aqueous compositions for post treating metal coated substrates such as cadmium-plated steel, and zinc-nickel coated substrates and the process for using said compositions to provide a color recognizable coating and, to improve the corrosion-resistance, abrasion, electrical, and adhesion properties o...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NICKERSON, WILLIAM C., JR, MATZDORF, CRAIG A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY OTHER WORKING OF METAL PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING UNIVERSAL MACHINE TOOLS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Aqueous compositions for post treating metal coated substrates such as cadmium-plated steel, and zinc-nickel coated substrates and the process for using said compositions to provide a color recognizable coating and, to improve the corrosion-resistance, abrasion, electrical, and adhesion properties of the coating. The post-treatment composition comprises an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 and contains effective amounts of trivalent chromium compounds, alkali metal hexafluorozirconates, at least one divalent zinc compound, alkali metal fluoro-compounds, and effective amounts of water soluble thickepers, wetting agents or surfactants. L'invention concerne des compositions aqueuses destinées à post-traiter des substrats recouverts de métal tels que de l'acier composé de cadmium, et des substrats recouverts de zinc-nickel. L'invention concerne également un procédé destiné à utiliser lesdites compositions pour produire un revêtement à couleur reconnaissable et pour améliorer la résistance à la corrosion, à l'abrasion, les propriétés électriques et l'adhérence du revêtement. La composition de post-traitement comprend une solution aqueuse acide présentant un pH compris entre 2,5 et 5,5 environ et contient des quantités efficaces de composés de chrome trivalent, des hexafluorozirconates métalliques alcali, au moins un composé de zinc divalent, des composés fluorométalliques alcali, et des quantités efficaces d'agents épaississants hydrosolubles, des agents humidifiants ou des tensioactifs.