Al-coated steel sheet having excellent total reflection and corrosion resistance, and method for producing same

Al-coated steel sheet having excellent total reflection and corrosion resistance, and method for producing same

  • CN 105,555,986 B
  • Filed: 07/07/2014
  • Issued: 08/04/2020
  • Est. Priority Date: 08/14/2013
  • Status: Active Grant
First Claim
Patent Images

1. An Al-coated steel sheet having an Al coating layer with an average thickness of 7 μ

  • m or more on the surface of a base steel sheet with an Al-Fe-Si alloy layer interposed therebetween, wherein the average Si concentration in a surface layer portion from the surface of the Al coating layer to a depth of 3 μ

    m is 1.07 mass% or less, the area ratio of the Al-Fe intermetallic compound phase to the surface of the Al coating layer is 10% or less, and the Al-coated steel sheet is excellent in total reflection characteristics and corrosion resistance.

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