BLACK SURFACE TREATED STEEL SHEET AND ITS PRODUCTION

PURPOSE:To provide superior corrosion resistance, formability, and design characteristics by forming an Mn (alloy) plating layer on the surface of a steel sheet by means of electrolysis and then forming a black layer consisting of MnN by means of nitriding treatment. CONSTITUTION:An Mn or Mn alloy p...

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Bibliographische Detailangaben
1. Verfasser:	SAKOTA AKITO
Format:	Patent
Sprache:	eng
Schlagworte:	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 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:	PURPOSE:To provide superior corrosion resistance, formability, and design characteristics by forming an Mn (alloy) plating layer on the surface of a steel sheet by means of electrolysis and then forming a black layer consisting of MnN by means of nitriding treatment. CONSTITUTION:An Mn or Mn alloy plating layer is formed on the surface of a steel sheet by an aqueous solution electrolytic method, etc. Nitriding treatment by an ion nitriding method, etc., is applied to this plating layer, by which a black layer composed essentially of MnN is formed. It is preferable to limit the thickness of the plating layer to