Frictional characteristics of carbon nano-tube powders were measured and compared with those of conventional solid lubricants, MoS2 and graphite. In linear one way sliding tests, a multi-wall CNT showed similar coefficient of friction with graphite. It was also showed that the larger the particle sizes, the smaller the COF for those powders. A sliding model considering CNT geometry was proposed.
Effects of Tube Diameter on Frictional Characteristics of Carbon Nanotubes
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Kawakubo, Y, Gotou, M, Toumatsu, M, & Miyazaki, K. "Effects of Tube Diameter on Frictional Characteristics of Carbon Nanotubes." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 391-392. ASME. https://doi.org/10.1115/WTC2005-63602
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