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Heat-resistant and anticorrosive lamellar metal-plated steel material with uniform processability and anticorrosiveness

  • US 6,071,631 A
  • Filed: 11/26/1997
  • Issued: 06/06/2000
  • Est. Priority Date: 11/14/1994
  • Status: Expired due to Term
First Claim
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1. A steel material having, on the outer surface thereof,a Ni-layer having a thickness of 0.2 to 10 μ

  • m;

    a first Zn/Ni alloy layer having a thickness of 1 to 15 μ

    m disposed over the Ni-layer, wherein the first Zn/Ni alloy layer has been plated using an acid bath; and

    a second Zn/Ni alloy layer having a thickness of 1 to 10 μ

    m disposed over the first Zn/Ni alloy layer, wherein the second Zn/Ni alloy layer has been plated using an alkaline bath.

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