The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2007
Filed:
Nov. 24, 2004
Isabell Buresch, Illertissen, DE;
Isabell Buresch, Illertissen, DE;
Wieland-Werke AG, Ulm, DE;
Abstract
The invention relates to a layer sequence on a substrate made from copper, a copper-based alloy, a copper-plated substrate or a nickel or a nickel-based alloy for production of a composite material, in which a covering layer, consisting of tin or a tin-based alloy, which is arranged at least over part of the substrate, a barrier layer, which is located between the substrate and the covering layer and is in direct contact with the substrate, the barrier layer consisting of at least one element selected from the group consisting of Fe, Co, Nb, Mo or Ta, and an intermediate layer and a reaction layer, which is located between the barrier layer and the covering layer, the intermediate layer consisting of at least one element selected from the group consisting of Cu and Ni. The reaction layer required between covering layer and intermediate layer consists of Ag, an Ag alloy or Pt and Pd and its alloys. Furthermore, the invention relates to a process for producing a composite material from the layer sequence with a subsequent heat treatment.