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- Title
Effect of Current Type and Density on Tribological Properties of Electrodeposited Ni-Co/MWCNT Nanocomposite Coatings.
- Authors
Karslioglu, Ramazan; Akçil, Mustafa; Alp, Ahmet; Akbulut, Hatem
- Abstract
Nickel (Ni)–cobalt (Co) alloys and multi-walled carbon nanotube (MWCNT)-reinforced Ni-Co nanocomposite coatings were produced by direct current (DC) and pulse reverse current (PRC) electrodeposition methods on a copper substrate with various current densities between 3.0 and 9.0 A/dm2. The effects of current type and density on the microstructural and tribological properties of an unreinforced Ni-Co alloy and MWCNT-reinforced Ni-Co nanocomposite coatings were investigated. The results show that the PRC type increased the hardness value from 261 HV to 290 HV. In MWCNT additions to the Ni-Co nanocomposite coatings, the microhardness values reached 465 HV. Also, MWCNT additions significantly increased the wear resistance and decreased the friction coefficient between the friction surfaces because of the self-lubrication effect of the MWCNT. The PRC type also provided better tribological properties in comparison with the DC type for both samples of unreinforced and MWCNT-reinforced Ni-Co alloys.
- Subjects
DENSITY currents; NANOCOMPOSITE materials; SURFACE coatings; COPPER; CARBON nanotubes; COBALT nickel alloys; METALLIC composites
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 12, p5114
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-023-06091-z