Patent ID: 7758970

Claim:
A different materials bonded member, comprising: a metallic member; a ceramic base having a bonding surface; a solder material comprising Au interposed between said ceramic base and said metallic member, and including a metal which is active to a ceramic constituting said ceramic base formed on at least a portion of said bonding surface; and a barrier layer interposed between said ceramic base and said metallic member, said barrier layer comprising chromium (Cr) which protects against or suppresses the diffusion of a metal constituting said metallic member into said solder material, wherein said ceramic base and said metallic member are bonded to one another via said solder material which is disposed on said bonding surface and is heated and melted such that said metal which is active to the ceramic constituting said ceramic base is completely consumed at the interface of said solder material and said ceramic base to form a pre-coat layer adhering to said bonding surface, said metallic member is disposed on a surface of said pre-coat layer and a bonded part is formed by solidifying said pre-coat layer after said pre-coat layer is heated and melted at a temperature between 1070 and 1150° C. to bond said ceramic base and said metallic member to one another.