| 摘要 |
The invention relates to a surface-finished steel sheet, preferably a cold-rolled thin steel sheet, having a metallic corrosion-resistant layer containing, inter alia, aluminium and iron, wherein the aluminium content of the corrosion-resistant layer is more than 40% by weight, preferably more than 45% by weight, particularly preferably more than 50% by weight. In order that the corrosion-resistant layer has good forming properties, in particular cold-forming properties, and therefore considerably improved adhesion during forming, it contains, according to the invention, nickel, wherein nickel-containing phases are formed in particular at the transition of the corrosion-resistant layer to the base material of the steel sheet, and wherein the nickel content of the corrosion-resistant layer is in the range of from 5 to 30% by weight, preferably in the range of from 10 to 25% by weight. The invention also describes and claims a method for producing such a surface-finished steel sheet. The method according to the invention is characterized in that a steel sheet, preferably a cold-rolled thin steel sheet, is firstly provided as a flat steel product with a nickel layer before hot-dip coating with molten aluminium or a molten alloy based on aluminium. |
