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Method of joining metallic members, and joined metallic members

  • US 6,220,501 B1
  • Filed: 10/13/1998
  • Issued: 04/24/2001
  • Est. Priority Date: 10/13/1997
  • Status: Expired due to Term
First Claim
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1. A method of joining a pair of metallic members together, comprising the steps of:

  • preparing said pair of metallic members in coated form, wherein one of the metallic members is coated with a first undercoat composed of tin and zinc and the other of the metallic members is coated with a second undercoat composed of tin and zinc;

    contacting the metallic members with each other either through a flux or in a reducing atmosphere, while heating the metallic members to melt at least one of the first undercoat and the second undercoat; and

    solidifying the molten undercoat to join the metallic members, wherein the ratio of zinc in the first undercoat is represented by x (% by weight), the ratio of zinc in the second undercoat is represented by y (% by weight), and the ratio, x, and the ratio, y, are values such as satisfy the following formulas;

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