Tribological Behavior of Copper/MWCNT Nanocomposites Produced by Pulse Electrodeposition

Abstract

Copper coatings containing well-distributed multiwalled carbon nanotubes were obtained by pulse electrodeposition in acidic sulfate bath in order to improve the microhardness and wear resistance of coatings. Multiwalled carbon nanotubes concentration was determined as the most signicant factor for the incorporation of multiwalled carbon nanotubes in copper based electrolyte. The amount of embedded multiwalled carbon nanotubes and the microhardness of nanocomposites were found to increase with the increase of multiwalled carbon nanotubes in the electrolyte. The tribological properties of nanocomposites deposited by pulse electrocodeposition technique were studied by reciprocating ball on-disk method. The characterization of the coatings was investigated by scanning electron microscopy and X-ray diraction facilities. The experimental results indicated that the wear resistance of copper composite is superior to that of pure copper. The friction coecient and wear rates decreased with the increase in the concentration of multiwalled carbon nanotubes in the electrolyte.

Fabrication of Sn–Ni/MWCNT composite coating for Li-ion batteries by pulse electrodeposition: Effects of duty cycle

“…When duty cycle increased from 10% to 75%, the average current density increased, because of increasing T on time with duty cycle. As also stated by Gül et al [24] increasing average current density results in decreasing the grain size due to increasing ionic mobility and causing to increase the nucleation of matrix grains. According to their results, when the current density increased from 1 A dm −2 to 9 A dm −2 the grain size of Ni was reduced from 74 nm to 54 nm.…”

Enhancement of electro-thermal and mechanical properties for Cu-SWCNT coated 6061Al

“…The thermal conductivity also improved by 180% for Cu–CNT composite compared to pure copper [30]. The tribological and corrosion properties were considerably increased by the incorporation of MWCNTs in metal matrix using electrocodeposition technique [31,32]. The thermal and electrical conductivity of SS316 specimen were improved by the electrodeposition of Cu–MWCNT composite coatings [33].…”

Investigation of electro-thermal property of Cu-MWCNT-coated 316L stainless steel

“…It can improve the mechanical as well as thermal and electrical properties. Several researchers have successfully developed Cu-MWCNTs [23,24], Co-MWCNT [25], Co-W-MWCNT [26], Ni-W-MWCNTs [27] and graphine-copper [28] nanocomposites coatings using the electrodeposition process. Ramalingam et al [29] developed Cu-MWCNTs nanocomposite coatings by the electrodeposition technique from optimised bath composition and using optimised process conditions.…”

“…It can improve the mechanical as well as thermal and electrical properties. Several researchers have successfully developed Cu-MWCNTs [23,24], Co-MWCNT [25], Co-W-MWCNT [26], Ni-W-MWCNTs [27] and graphine-copper [28] nanocomposites coatings using the electrodeposition process. Ramalingam et al.…”