| 摘要 |
The present invention relates to a method to manufacture steel sheets coated with Zn-Fe alloy with an excellent corrosion resistance used in producing a body frame and a chassis of an automobile under optimal coating conditions by adjusting the temperature, pH, electric current density of an electrolyte consisting of zinc sulfate hydrate, iron sulfate hydrate, ammonium sulfate and potassium chloride as well as the thickness of a coating layer.
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