Conformable nickel coating and process for coating an article wi

Details Conformable nickel coating and process for coating an article wi Conformable nickel coating and process for coating an article wi

1996-06-06

1999-06-29

Nguyen, Nam

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428544, 428600, 428672, 428673, B32B 1501

Patent

active

059166967

ABSTRACT:
The present invention is directed to a lead frame in which the metal lead frame substrate is copper, copper alloy, or nickel alloy. The lead frame substrate is coated with a conformable nickel coating that is crack-resistant when the lead frame is bent to an angle of at least 82 degrees with a bend radius of about 150 .mu.m to about 300 .mu.m. Bending the lead frame in this manner causes surface deformations in the lead frame substrate. Cracks do not appear through the thickness of the conformable nickel coating of the present invention when the depth of the deformations that result from this bending do not exceed about 5 .mu.m.

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