KORROSIONSSCHUTZ VON STAHL

The corrosion protecting action of iron phosphate or zinc phosphate coatings on mild steel is markedly raised by treating with solutions of alpha -aminophosphonic or -phosphonous acids or their water soluble salts. Compounds having more than one amino and more than one phosphonic or phosphonous acid...

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Bibliographische Detailangaben
Hauptverfasser:	BURROWS,JOHN, MILES,PETER,DR, ROGER,HARGREAVES,JAMES
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM APPARATUS THEREFOR 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 DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE ORGANIC CHEMISTRY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The corrosion protecting action of iron phosphate or zinc phosphate coatings on mild steel is markedly raised by treating with solutions of alpha -aminophosphonic or -phosphonous acids or their water soluble salts. Compounds having more than one amino and more than one phosphonic or phosphonous acid groups are also suitable. Paint films on metal surfaces pretreated in this manner show a considerably better adhesion than on untreated surfaces.