×

Corrosion-resistant coated metal and method for making the same

  • US 6,794,060 B2
  • Filed: 01/17/2003
  • Issued: 09/21/2004
  • Est. Priority Date: 03/27/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A corrosion-resistant petroleum receptacle comprising at least one shell member that includes a seal to maintain fluid within an interior of said petroleum receptacle, said seal including a weld, a solder, bonding, and combinations thereof, said at least one shell member including a carbon steel metal strip having a top and bottom surface coated with a corrosion-resistant tin-zinc alloy which forms a two phase alloy upon cooling which resists corrosion by petroleum products, said carbon steel strip having a thickness of less than about 5080 microns, said corrosion-resistant carbon steel metal strip including a hot dipped coating of said corrosion-resistant tin-zinc alloy, said corrosion-resistant tin-zinc alloy comprising tin, zinc and metal additive, at least about 95 weight percent of said corrosion-resistant tin-zinc alloy comprised of tin and zinc, said zinc content of said corrosion-resistant tin-zinc alloy being up to about 30 weight percent, said corrosion-resistant metal alloy forming a multi-phase alloy when solidified and said tin and said zinc forming a phase in said corrosion-resistant metal alloy, said metal additive including an effective amount of at least one metal to positively affect at least one property of said tin-zinc alloy selected from the group consisting of enhancing the mechanical properties of the metal alloy, improving the corrosion resistance of the metal alloy, improving the grain refinement of the metal alloy, altering the color of the metal alloy, altering the reflectiveness of the metal alloy, inhibiting the oxidation of the metal alloy during forming or coating of the metal alloy, inhibiting the oxidation of the metal alloy when the metal alloy is exposed in various types of environments, inhibiting dross formation during the forming or coating of the metal alloy, stabilizing at least one component of the metal alloy, improving the bonding of the metal alloy on the base metal, improving the bonding of the metal alloy on an intermediate barrier metal layer on the base metal, improving the flowability of the metal alloy during the forming process, improving the flowability of the metal alloy during the coating process, producing the desired thickness of heat created intermetallic layer, reducing the crystallization of the tin in the metal alloy and combinations thereof, said metal additive including a metal selected from the group consisting of copper, lead, magnesium, manganese, nickel, silicon, titanium and mixtures thereof, said corrosion-resistant tin-zinc alloy having a coating thickness of up to about 0.003 inch.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×