Frictional and wear properties of cobalt/multiwalled carbon nanotube composite films formed by electrodeposition

Abstract

Carbon nanotubes (CNTs) have solid lubricity due to their unique structure and as such, CNT composites are also expected to exhibit superior tribological properties. In this study, Co/CNT composite films were fabricated using a composite electrodeposition technique and their tribological properties were investigated. Three different sizes of multiwalled carbon nanotubes (MWCNTs) were used as CNTs. The microstructures of the composite films were examined using scanning electron microscopy. Frictional and wear properties were examined using a ball-on-disk method without any lubricants at room temperature and at high temperatures (100-500 °C). The Co/MWCNT composite films had lower coefficients of friction than a cobalt film at room temperature. In contrast, the coefficients of friction of the Co/MWCNT composite film at high temperature became higher than that at room temperature and slightly lower than that of a cobalt film.

Comprehensive review on carbon nanotubes embedded in different metal and polymer matrix: fabrications and applications

“…Electrochemical deposition is categorized into electroless deposition and electro-deposition, both have been used for the fabrication of CNTs/ metal matrix. Electrodeposition follows the conventional electrochemical cells in which composite film is placed through current-flow between anode and cathode [152]. However, the electroless technique does not need any external source of energy, it is generally a chemical process in which thermochemical decomposition of metallic salts is carried out in a bath to exit metallic ions that produce a composite with CNTs.…”

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.…”

Electrodeposition and characterisation of Cu–MWCNTs nanocomposite coatings

“…30 These materials have been reinforced with metals to form nanocomposite coatings with improved hardness, wear resistance and corrosion resistance properties. [31][32][33][34] Even though the electrodeposited copper is widely used in the electronics industry for its excellent electrical conductivity, owing to the poor wear resistance and low strength causes failure in the electronic components. Arai et al prepared Cumulti-walled carbon nanotube (MWCNT) composite films by the electrodeposition method and studied its internal stress, electrical conductivity and thermal conductivity.…”