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Nickel-iron (80:20) alloy thin film electroplating method and electrochemical treatment and plating apparatus

  • US 4,102,756 A
  • Filed: 12/30/1976
  • Issued: 07/25/1978
  • Est. Priority Date: 12/30/1976
  • Status: Expired due to Term
First Claim
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1. A nickel-iron electroplating method for coating a substrate having a mask deposited thereon including means for electroplating a nickel-iron film onto a sheet substrate of a metallic material,said method including employing a plating current density of about 2 - 60 ma/cm2,a plating bath fluid having an Fe++ ion concentration of about 0.3 g/l to about 1.0 g/l,an Ni++ ion concentration of about 17-44 g/l, a pH of about 1 - 3.6, and maintaining said fluid at a temperature of about 20°

  • - 35°

    C,wherein Fe++ ion concentration required for plating is inverse to circulation of said plating bath fluid across said substrate.

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