Few layer graphene to reduce wear and friction on sliding steel surfaces
2012; Elsevier BV; Volume: 54; Linguagem: Inglês
10.1016/j.carbon.2012.11.061
ISSN1873-3891
AutoresDiana Berman, Ali Erdemir, Anirudha V. Sumant,
Tópico(s)Diamond and Carbon-based Materials Research
ResumoWe report that solution-processed graphene layers reduce friction and wear on sliding steel surfaces in air (relative humidity, 30%). In tests with sliding steel surfaces, small amounts of graphene-containing ethanol solution decreased wear by almost 4 orders of magnitude and friction coefficients by a factor of 6. A possible explanation for these results is that the graphene layers act as a two-dimensional nanomaterial and form a conformal protective coating on the sliding contact interfaces, and these factors facilitate shear and slow down the tribo-corrosion, thus drastically reducing the wear.
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