MOLTEN ZINC ALLOY PLATED STEEL STRIP HAVING EXCELLENT CORROSION RESISTANCE AND EXTERNAL SURFACE AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a molten zinc alloy plated steel strip which is widely used in vehicles, domestic appliances, construction materials or the like and a method for manufacturing the same. In the present invention, a Zn-Al-Mg molten zinc alloy plating bath is used for manufacturing the molten zinc alloy plated steel strip, and a small amount of Ga or In is added to the plating bath for inhibiting an oxidation reaction of Mg in the plating bath so as to obtain excellent corrosion resistance and external surface of the plated steel strip which is manufactured at this point.