Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating

CCHEMISTRY METALLURGY C23Surface treatment C23CCOATING 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

C23C22/00Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating

C23C22/02using non-aqueous solutions C23C22/03containing phosphorus compounds C23C22/04containing hexavalent chromium compounds C23C22/05using aqueous solutions C23C22/06using aqueous acidic solutions with pH less than 6 C23C22/07containing phosphates C23C22/08Orthophosphates C23C22/10containing oxidants C23C22/12containing zinc cations C23C22/13containing also nitrate or nitrite anions C23C22/14containing also chlorate anions C23C22/16containing also peroxy-compounds C23C22/17containing also organic acids C23C22/18containing manganese cations C23C22/182containing also zinc cations C23C22/184containing also nickel cations C23C22/186containing also copper cations C23C22/188containing also magnesium cations C23C22/20containing aluminium cations C23C22/22containing alkaline earth metal cations C23C22/23Condensed phosphates C23C22/24containing hexavalent chromium compounds C23C22/26containing also organic compounds C23C22/27Acids C23C22/28Macromolecular compounds C23C22/30containing also trivalent chromium C23C22/32containing also pulverulent metals C23C22/33containing also phosphates C23C22/34containing fluorides or complex fluorides C23C22/36containing also phosphates C23C22/361containing titanium, zirconium or hafnium compounds C23C22/362containing also zinc cations C23C22/364containing also manganese cations C23C22/365containing also zinc and nickel cations C23C22/367containing alkaline earth metal cations C23C22/368containing magnesium cations C23C22/37containing also hexavalent chromium compounds C23C22/38containing also phosphates C23C22/40containing molybdates, tungstates or vanadates C23C22/42containing also phosphates C23C22/43containing also hexavalent chromium compounds C23C22/44containing also fluorides or complex fluorides C23C22/46containing oxalates C23C22/47containing also phosphates C23C22/48not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates C23C22/50Treatment of iron or alloys based thereon C23C22/52Treatment of copper or alloys based thereon C23C22/53Treatment of zinc or alloys based thereon C23C22/54Treatment of refractory metals or alloys based thereon C23C22/56Treatment of aluminium or alloys based thereon C23C22/57Treatment of magnesium or alloys based thereon C23C22/58Treatment of other metallic material C23C22/60using alkaline aqueous solutions with pH greater than 8 C23C22/62Treatment of iron or alloys based thereon C23C22/63Treatment of copper or alloys based thereon C23C22/64Treatment of refractory metals or alloys based thereon C23C22/66Treatment of aluminium or alloys based thereon C23C22/67with solutions containing hexavalent chromium C23C22/68using aqueous solutions with pH between 6 and 8 C23C22/70using melts C23C22/72Treatment of iron or alloys based thereon C23C22/73characterised by the process C23C22/74for obtaining burned-in conversion coatings C23C22/76Applying the liquid by spraying C23C22/77Controlling or regulating of the coating process C23C22/78Pre-treatment of the material to be coated C23C22/80with solutions containing titanium or zirconium compounds C23C22/82After-treatment C23C22/83Chemical after-treatment C23C22/84Dyeing C23C22/86Regeneration of coating baths