Method for coating metal using thermal diffusion coating with Zinc and Aluminum

摘要

The present invention relates to a zinc aluminum based heat diffusion coating method and a metal coated by the coating method. More particularly, the present invention relates to a method of thermal diffusion coating a metal, comprising: removing surface foreign matter of a sample metal to be surface coated; Preparing a mixed powder material in which zinc and aluminum are mixed; And a step of immersing the sample metal in the mixed powder material and heating the zinc metal-based thermal diffusion coating material. And to provide a zinc-aluminum-based heat diffusion coating method which provides excellent corrosion resistance to corrosion-resistant iron.