Patent ID: 6340113
Filing Date: 2002-01-22
Classification: B23K,H05K

Abstract:
A method of forming a compliant, porous failure-resistant joint between two opposed surfaces comprising the steps of:applying a solder composition to at least one of said opposed surfaces, said solder composition comprising a plurality of bimetallic particles having a first core metal and a second coating metal, wherein a combination of the first and second metals has a lower melting point than either of the first and second metals alone, raising said particles to a temperature just above the melting point of the combination of the first and second metals, such that the second coating metal dissolves into the first core metal, and controlling the maximum temperature above the melting point of said combination of first and second metals to thereby form a compliant, porous failure-resistant joint that has an average pore size of from about 1 micrometer to about 1000 micrometers and that resists flowing or slumping.