Composite nickel-phosphorus alloy plated metal sheet excellent i

Details Composite nickel-phosphorus alloy plated metal sheet excellent i Composite nickel-phosphorus alloy plated metal sheet excellent i

1990-10-17

1991-06-18

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

204 447, 428457, 428480, 428653, 428684, B32B 1508

Patent

active

050249002

ABSTRACT:
A composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having a Vickers hardness of at least 500 Hv, which comprises: a composite nickel-phosphorus alloy plating layer as a lower layer, formed on at least one surface of a metal sheet, in which Ni.sub.3 P particles and fluorocarbon polymer particles are uniformly dispersed; and a fluorocarbon polymer layer as an upper layer formed by melting the fluorocarbon polymer particles which are exposed on the surface of the composite nickel-phosphorus alloy plating layer as the lower layer. The sum of a phosphorus content in the composite nickel-phosphorus alloy plating layer as the lower layer and a phosphorus content in the Ni.sub.3 P particles is from 1 to 15 wt. % relative to the composite nickel-phosphorus alloy plating layer as the lower layer, and a content of the fluorocarbon polymer particles in the composite nickel-phosphorus alloy plating layer as the lower layer is from 0.3 to 15.2 wt. % relative to the composite nickel-phosphorus alloy plating layer as the lower layer.

REFERENCES:
patent: 4194040 (1980-03-01), Breton et al.
patent: 4497877 (1985-02-01), Krijl et al.

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