Composite article comprising a copper element and a process for

Details Composite article comprising a copper element and a process for Composite article comprising a copper element and a process for

1989-07-21

1990-11-13

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428409, 428457, 428901, 156 60, 427 96, 430311, B32B 900

Patent

active

049701070

ABSTRACT:
To make a composite article comprising a copper element and an adhesive material adhesively bonded to a surface thereof, the surface of the copper element is provided with knife-shaped elongate projections whose opposite flanks are at an average angle of less than 60.degree. to each other. The knife-shaped elongate projections may include rod-shaped projections much smaller than the knife-shaped projections projecting outwardly from the surface of the knife-shaped projections. The knife-shaped projections may be formed by electroless plating and the rod-shaped projections by oxidation and optionally reduction. Bonding strength is improved.

REFERENCES:
patent: 3615737 (1971-10-01), Schneble, Jr. et al.
patent: 4632852 (1986-12-01), Akahoshi et al.
patent: 4642161 (1987-02-01), Akahoshi et al.
patent: 4643793 (1987-02-01), Nakaso et al.
patent: 4696861 (1987-09-01), Tatematsu et al.
patent: 4774122 (1988-09-01), Adler
patent: 4806432 (1989-02-01), Eguchi et al.

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