Patent ID: 6772936
Filing Date: 2004-08-10
Classification: B23K,H01R,H05K,Y10T

Abstract:
A method for creating an electroconductive joint in connection with conductor rails made of copper or copper alloy, comprising applying soldering agent in between the conductor rail elements to be joined, then heating at least the junction area, so that a joint is created, wherein the employed soldering agent is a layered soldering agent foil comprising surface layers formed of tin (Sn) or a metal other than tin, that dissolves well in copper and has a melting temperature that is lower than the melting temperature of the conductor rail elements to be joined, and an intermediate layer therebetween having an eutectic composition with copper, said intermediate layer of the soldering agent being selected from the group consisting of essentially silver, a mixture of silver and copper (Ag+Cu), a mixture of aluminum and copper (Al+Cu) and a mixture of tin and copper (Sn+Cu), and thermally treating the junction area so that a diffusion joint is created.