Patent ID: 6824888
Filing Date: 2004-11-30
Classification: B23K,G21B,Y02E,Y10T

Abstract:
A bonded body of a beryllium member bonded to a copper or copper alloy member through a plurality of layers, comprising a diffusion inhibition layer consisting of a thin titanium, chromium, molybdenum or silicon layer, a bonding layer consisting of a thin copper layer, and a solid solution layer of aluminum or zinc and copper, said diffusion inhibition layer, said bonding layer and said solid solution layer being arranged in the stated sequence as seen in a direction from said beryllium member to said copper or copper alloy member,wherein said titanium layer is formed prior to bonding to have a thickness of 0.5 to 50 &mgr;m, said chromium layer is formed prior to bonding to have a thickness of 0.1 to 5 &mgr;m, said molybdenum layer is formed prior to bonding to have a thickness of 0.5 to 20 &mgr;m, said silicon layer is formed prior to bonding to have a thickness of 0.5 to 10 &mgr;m, said bonding layer is formed prior to bonding to have a thickness of 2 to 500 &mgr;m, and said solid solution layer, after bonding, has a thickness of 0.1 to 100 &mgr;m.