Patent ID: 11876030
Assignee: DOWA HOLDINGS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  C | IPC B  C  H

Claim 12:
13. A method for producing a clad material, the method comprising the steps of:
preparing a Cu-graphite layer by sintering a graphite powder having a Cu film on the surface thereof;
preparing Mo—Cu layers, each of which has a metal film of a single metal selected from the group consisting of Co, Ti, Pd, Pt and Ni on at least one side thereof;
arranging each of the Mo—Cu layers on a corresponding one of both sides of the Cu-graphite layer so as to allow the metal film of a corresponding one of the Mo—Cu layers to contact the corresponding one of both sides of the Cu-graphite layer; and
heating the Cu-graphite layer and the Mo—Cu layers while a pressure is applied between the Cu-graphite layer and the Mo—Cu layers.