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Carbodeon of Finland has worked with metal finishing specialist CCT Plating of Germany to develop a new NanoDiamond enhanced electroless nickel plating to provide improved performance in sliding applications.
Electroless nickel coatings offer many advantages over other coating types, Carbodeon reports, such as excellent corrosion and abrasion resistance, an even coating thickness over complex geometries and relatively low cost. However they do not perform well in tribological applications involving moving metal parts, where adhesive wear and galling tend to lead to rapid wear or failure. Incorporating Carbodeon NanoDiamond into the coating is said to solve this problem. Spherical diamond nanoparticles are specially treated to make them disperse in coating liquids and carry a positive electrical charge on their surfaces. In the plating process, the diamond particles behave similarly to positively charged metal ions and together with the coating material they co-deposit onto the component.
According to Carbodeon, metal-diamond composite surface treatments have already shown their value in abrasion resistant coatings, but in this latest generation of coatings the process has been optimised to better combat adhesive wear, which occurs mainly when the plated parts are in sliding contact with other metal parts.
Key performance characteristics are stated as:
Target applications include anything which experiences sliding wear, including the automotive, printing, textile manufacturing and oil and gas industries.
The nanomaterial for the process can be obtained from Carbodeon, which can also implement the complete plating process in existing customer plating facilities. Alternatively, job plating or turnkey solutions can be carried out by CCT Plating in Stuttgart, Germany.
Carbodeon has patented the nanodiamond material and the plating application.
Image provided by Carbodeon
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