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US 6,635,165 B1Granted
Method for coating workpieces
AssigneeEnthone Inc.
InventorsKlaus L. Wilbuer, Hans H. Urlberger
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AssigneeEnthone Inc.
InventorsKlaus L. Wilbuer, Hans H. Urlberger
Estimating the term…
The invention relates to a method for coating workpieces. According to said method, an alloy containing at least phosphorus and nickel is precipitated from an electrolyte to produce a functional, especially corrosion-resistant and wear-resistant metallic coating. The aim of the invention is to provide a means of increasing wear resistance and hardness and improving the anti-corrosion effect with a significantly higher rate of incorporation of elementary phosphorus. To this end, an at least quarternary alloy with the components nickel, cobalt, wolfram and phosphorus is electrolytically precipitated in the form of a coating. The invention also relates to a corrosion-resistant and wear-resistant coating with essentially the following composition: 0.5 to 2.0 wt. % wolfram; 1.0 to 2.0 wt % cobalt; 15 to 20 wt. % phosphorus and at least 10 wt. % nickel.
A process for the plating of work pieces, comprising precipitating from an electrolyte a corrosion and wear-resistant coating comprising at least a quaternary alloy with the components nickel, cobalt, about 0.5 to about 2.0 wt % tungsten, and phosphorus.
Dependencies are inferred from the claim text.