| 摘要 |
A Zn-Co-W alloy electropated steel sheet with excellent corrosion resistance and weldability, and an electrolyte for manufacturing the same arc provided. Accordingly, the present invention relates to a Zn-Co-W alloy electroplated steel sheet, wherein a plating layer consisting of Co: 0.1-3.0 W %, and zinc: balance, is formed on the steel sheet and all tungsten plating is carried out with metallic tungsten; an electrolyte for manufacturing a Zn-Co-W alloy electroplated steel sheet, comprising zinc chloride: 60-200 g/l, cobalt chloride: 0.1-6.0 g/l, tungsten: 0.1-4.0 g/l, citric acid: 0.5-10.0 g/l, polyethylene glycol: 0.1-2.0 m/l and electric conductive aid: 30-400 g/l, wherein almost all ions of the tungsten form a complex compound with citric acid, thereby preventing formation of sludge; and a Zn-Co-W alloy electroplated steel sheet, on which a plating layer is formed by electroplating the steel in the electrolyte.
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