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US 12,410,525 B2Granted
Multilayer corrosion system
AssigneeMacDermid, Incorporated
InventorsGeorge Bokisa, Adam Colburn, Bradley Durkin, Maurice Mills, Ambrose Schaffer
Life of this patent
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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.
Claims11
An article comprising:
- a metal 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;
- wherein the at least one layer of electroless nickel has a thickness of about 0.5 mil to about 2 mil;
- and
- wherein the thickness of the at least one layer of electrolytic nickel is at least 10% less than the thickness of the at least one layer of electroless nickel.
1 more element
Dependencies are inferred from the claim text.