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US 2023/0349049 A1Published application
Multilayer corrosion system
AssigneeMacDermid, Incorporated
InventorsGeorge BOKISA, Adam COLBURN, Bradley DURKIN, Maurice MILLS, Ambrose SCHAFFER
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Abstract
An article including a substrate having on at least a portion of its surface a multilayer coating. The multilayer coating including at least one layer of electroless nickel overlying the portion of the surface, at least one layer of electrolytic nickel overlying the layer of electroless nickel, and at least one layer of an electrolytic tin-nickel overlying the layer of electrolytic nickel.
Claims21
An article comprising:
- an aluminum substrate, which is optionally zincate coated, having on at least a portion of its surface a multilayer coating, the multilayer coating comprising at least one layer of electroless nickel overlying the portion of the surface, at least one layer of electrolytic nickel overlying the layer of electroless nickel, and at least one layer of electrolytic tin-nickel overlying the layer of electrolytic nickel.
A method of forming a multilayer coating on a substrate, the method comprising:
- coating a surface of the substrate with at least one layer of electroless nickel;
- electroplating a layer of nickel on the at least one layer of electroless nickel;
- and
- electroplating a layer of tin-nickel alloy on the electroplated nickel layer.
1 more element
(canceled)
Dependencies are inferred from the claim text.