A Preliminary Investigation of Graphite, Graphene and Carbon Nanotubes (CNT's) as Solid State Lubricants

Abstract

Graphite is well known and has been extensively characterized in its performance as a solid state lubricant, but has not typically been successfully implemented for low voltage/current electrical contacts. Recent advances have shown that both graphene and carbon nanotubes (CNT) exhibit novel properties and could find potential use as solid state lubricants. A comparison of various properties including contact resistance and friction behavior on Au, Ag, and Sn surface finishes has been undertaken to explore the similarities and differences in these different forms of carbon.

Comprehensive Study on Carbon-Coated Silver for Improved Tribo-Electrical and Wetting Performance

“…Previous work carried out by Loyd et al delineated the lubricating capabilities of graphite, graphene, and CNT specifically for their implementation in low-voltage and low-current applications [33]. Moreover, previous studies on CNP coatings over copper substrates have shown favorable results in terms of tribological and electrical performance, as well as for atmospheric protection due to the hydrophobic tendency of the CNP [34][35][36][37].…”

Assembling of carbon nanotubes film responding to significant reduction wear and friction on steel surface

“…As lubricious materials, carbon nanotubes, discovered by Iijima (1991), is a potentially lubricious material. So far, tribological applications of CNTs include lubrication film, additive and filler (Loyd et al 2011;Cui et al 2013a;Schaber et al 2015;Chen et al 2005). Kis et al (2006) reported that multiwall carbon nanotubes shown ultralow friction between nanotube shells.…”