Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Depositing predominantly alloy coating
Patent
1993-04-09
1994-05-24
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Depositing predominantly alloy coating
205255, C25D 356
Patent
active
053146085
ABSTRACT:
A dense, smooth, ductile, hard, highly reflective, corrosion-resistant, temperature resistant, and wear-resistant crystalline alloy of nickel, cobalt and boron. The alloy is epitaxially electrodeposited on an activated substrate using a pulsed square wave current. The epitaxial deposition occurs in an electrolytic bath containing nickel ions, cobalt ions, complexing agents, and an amino borane compound at a moderately low pH level and moderate temperature. An insoluble, solid catalyst, preferably palladium, causes the alloy to diffuse into the surface of the substrate and become bonded by a polar-covalent bond to it. Implements coated with the alloy, as well as plating solutions and methods for making the alloy are also disclosed.
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Diamond Technologies Company
Mayekar Kishor
Niebling John
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