SURFACE-TREATED STEEL SHEET

A surface-treated steel sheet according to an aspect of the present invention includes: a steel sheet as a base metal and a coating layer, in which the coating layer includes a Ni-Co alloy coating layer, a Ni-Fe alloy layer, and a Ni layer, in the coating layer, a total adhesion amount of Co is 0.2...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI, Takehiro, SAITO, Mamoru, ISHIZUKA, Kiyokazu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A surface-treated steel sheet according to an aspect of the present invention includes: a steel sheet as a base metal and a coating layer, in which the coating layer includes a Ni-Co alloy coating layer, a Ni-Fe alloy layer, and a Ni layer, in the coating layer, a total adhesion amount of Co is 0.2 g/m2to 2.3 g/m2, and a total adhesion amount of Ni is 8.9 g/m2or more, the Ni layer has a thickness of 0.3 µm to 3.0 µm, an atomic concentration of Co on a surface of the Ni-Co alloy coating layer is 20 at% to 70 at%, and a Co concentration gradient y in the coating layer in a depth direction is 50 mass%/µm to 400 mass%/µm.