HOT-DIPPED ZN?AL?MG-BASED PLATED STEEL

This hot-dip Zn-Al-Mg-based plated steel includes: a steel; and a plating layer formed on a surface of the steel, in which the plating layer contains, as an average composition, Mg: 1 to 10 mass%, Al: 4 to 22 mass%, and a remainder consisting of Zn and impurities, the plating layer includes an (Al-Z...

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Bibliographische Detailangaben
Hauptverfasser:	MORISHITA, Atsushi, TOBA, Tetsuya, YAMAGUCHI, Shinichi, MITSUNOBU, Takuya, KOHIGASHI, Yusuke
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	This hot-dip Zn-Al-Mg-based plated steel includes: a steel; and a plating layer formed on a surface of the steel, in which the plating layer contains, as an average composition, Mg: 1 to 10 mass%, Al: 4 to 22 mass%, and a remainder consisting of Zn and impurities, the plating layer includes an (Al-Zn mixed structure) in an area ratio of 10% to 70% in a cross section of the plating layer in a matrix of an (Al/Zn/MgZn2 ternary eutectic structure), the (Al-Zn mixed structure) includes a first region that has a Zn concentration in a range of 75 mass% or more and less than 85 mass% and a second region that is present inside the first region and has a Zn concentration in a range of 67 mass% or more and less than 75 mass%, and an area ratio of the second region in the (Al-Zn mixed structure) in the cross section of the plating layer is more than 0% and 40% or less.