Patent ID: 9560755
Date: 2017-01-31
CPC Classifications: B23K,B32B,C04B,C22C,H01L,H05K

Claim:
1. A bonding body comprising: an aluminum member composed of aluminum; and a metal member composed of any of copper and silver, wherein the aluminum member and the metal member are bonded together, wherein in a bonding portion between the aluminum member and the metal member, a Ti layer and an Al—Ti—Si layer are formed, the Ti layer being disposed at the metal member side; and the Al—Ti—Si layer being disposed between the Ti layer and the aluminum member and containing Si which is solid-solubilized into Al wherein the Al—Ti—Si layer includes: a first Al—Ti—Si layer formed at the Ti layer side; and a second Al—Ti—Si layer formed at the aluminum member side and a Si concentration of which is lower than a Si concentration of the first Al—Ti—Si layer.