Patent ID: 7467741

Claim:
A method of forming a sputtering target assembly comprising a backing member and a target member, comprising: positioning a member having a bonding side with a plurality of projections, and a member having a bonding side with a plurality of grooves adapted to receive said projections, whereby said projections and said grooves are in substantial registration, and wherein an interface is defined by said bonding surfaces; slidably contacting a portion of at least one projection with a portion of at least one groove effective to generate frictional heat that softens and deforms the at least one projection; and partially deforming said at least one projection effective to at least partially fill said at least one groove, which said at least one deformed projection upon cooling and hardening thereby forming at least a mechanical bond between the target member and the backing member, wherein said member having said grooves is a metal having a melting point higher than that of the metal which comprises the projections.