Patent ID: 7398912
Filing Date: 2008-07-15
Classification: B32B,C04B,Y10T

Abstract:
1. A method for producing a different materials bonded member comprising a ceramic base and a metallic member bonded to one another via a solder material comprising Au, the method comprising the steps of: disposing the solder material on a bonding surface of the ceramic base including one of an active metal layer and metalized layer comprising a metal which is active to a ceramic constituting the ceramic base; heating and melting the solder material to form a pre-coat layer adhering to the bonding surface of the ceramic base; disposing the metallic member on a surface of the pre-coat layer, with a barrier layer interposed between the metallic member and the ceramic base, said barrier layer comprising a material which has a higher melting point than the solder and which protects against or suppresses the diffusion of a metal constituting the metallic member into the solder material; heating and melting the pre-coat layer at a temperature between 1070 and 1150° C.; and forming a bonded part by solidifying the pre-coat layer to bond the ceramic base and the metallic member to one another.