| abstract |
This surface-treated steel sheet includes: a steel sheet; and a plating layer that is formed on one or both sides of the steel sheet and includes zinc, and vanadium or zirconium. The plating layer has dendritic crystals which include zinc metal, and an inter-crystal fill region which fills a region between the dendritic crystals and shows an amorphous diffraction pattern in electron diffraction. For the plating layer including vanadium, the inter-crystal fill region includes hydrated vanadium oxide or vanadium hydroxide, and for the plating layer including zirconium, the inter-crystal fill region includes hydrated zirconium oxide or zirconium hydroxide. |