Effect of Current Type and Density on Tribological Properties of Electrodeposited Ni-Co/MWCNT Nanocomposite Coatings
JOM, vol.75, no.12, pp.5114-5125, 2023 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 75 Issue: 12
- Publication Date: 2023
- Doi Number: 10.1007/s11837-023-06091-z
- Journal Name: JOM
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
- Page Numbers: pp.5114-5125
- Ankara Yıldırım Beyazıt University Affiliated: Yes
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.