Corrosion resistant coating for fasteners

Details Corrosion resistant coating for fasteners Corrosion resistant coating for fasteners

1988-05-11

1989-06-06

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428658, 428679, 428680, 411903, B32B 1508

Patent

active

048370908

ABSTRACT:
A corrosion resistant coating and process comprises the following layers applied in sequence over a ferrous metal substrate: a micro-throwing nickel-zinc alloy plating; an optional galvanically protective zinc metal plating; a zinc-nickel alloy plating containing 5 to 30 weight percent nickel; and an organic coating such as paint. The coating is preferably used with steel drill screw fasteners wherein it also reduces installation torque and drill time.

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patent: 4508600 (1985-04-01), Irie et al.
patent: 4746408 (1988-05-01), Hyner et al.

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