120454 ⎘
Chemical 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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates; Orthophosphates containing zinc cations containing also peroxy-compounds
CHROMIUM(VI)-FREE COATING AGENT FOR METALS
#2METHOD AND SOLUTION FOR COATING METALLIC SURFACES WITH A PHOSPHATING SOLUTION CONTAINING HYDROGEN PEROXIDE, METALLIC OBJECT PRODUCED AND USE OF THE OBJECT
#3PHOSPHATING SOLUTION WITH HYDROGEN PEROXIDE AND CHELATING CARBOXYLIC ACIDS
#4Method and solution for coating metal surfaces with a posphating solution containing water peroxide, produced metal object and use of said object