METHOD FOR FORMING CONVERSION COATING ON OUTER SURFACE OF MAGNESIUM OR MAGNESIUM ALLOY

PROBLEM TO BE SOLVED: To provide a method for forming a conversion coating which is environmentally friendly and capable of imparting high corrosion resistance to an outer surface of magnesium or a magnesium alloy. SOLUTION: The method includes: a step of executing the water-rinsing after degreasing...

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Hauptverfasser:	KIM HONG GYEUN, SEO KYU HWAN, SONG TAE SEUNG, LEE JAE EUN, HAN SEONG HO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS 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 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 SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for forming a conversion coating which is environmentally friendly and capable of imparting high corrosion resistance to an outer surface of magnesium or a magnesium alloy. SOLUTION: The method includes: a step of executing the water-rinsing after degreasing an outer surface of magnesium or a magnesium alloy; a step of executing the water-rinsing after the etching for removing an oxide film on the outer surface of the magnesium or the magnesium alloy; a step of executing the water-rinsing after the desmutting treatment for removing smut generated on the outer surface of the magnesium or the magnesium alloy; a step of executing the water-rinsing after depositing a chemical-converted film on the outer surface of the magnesium or the magnesium alloy; and a step of executing the coating on the chemical-converted film. COPYRIGHT: (C)2011,JPO&INPIT