Effect of surface modification treatments on the properties of electrodeposited Cu-CNT coatings for self-lubricating surfaces.
DOI:
https://doi.org/10.52292/j.laar.2025.3685Keywords:
Copper, Carbon nanotubes, Composite, Friction, Tribology, PlatingAbstract
An eco-friendly alkaline glutamate-based electrolyte was used to produce copper-carbon nanotubes composite coatings with improved tribological properties.
Experiments were performed at different current densities to deposit pure Cu, Cu-CNT and Cu-activated CNT coatings. The electrolyte was agitated by low frequency ultrasound to disperse the particles and consequently, help their incorporation in the Cu matrix. The coatings were characterized by SEM and XRD. The wear resistance and coefficient of friction were evaluated with tribological tests.
Cu-CNT and Cu-activated CNT composites were successfully produced with improved tribological properties respect to those of pure Cu. It was found that the codeposition modified the morphology of the coatings as well as their crystallographic orientation. These modifications were more noticeable when the CNT were activated by acid-treatment.
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