Tribological studies of epoxy-carbon nanofiber composites – Effect of nanofiber alignment using AC electric field
Autor: | Amit Chanda, Naresh V. Datla, Sujeet K. Sinha |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Carbon nanofiber Mechanical Engineering Fiber orientation 02 engineering and technology Surfaces and Interfaces Epoxy matrix Epoxy Tribology 021001 nanoscience & nanotechnology Surfaces Coatings and Films 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Nanofiber Electric field visual_art visual_art.visual_art_medium Thermal stability Composite material 0210 nano-technology |
Zdroj: | Tribology International. 138:450-462 |
ISSN: | 0301-679X |
Popis: | In this study, an electric field was applied to align carbon nanofibers (CNF) in an epoxy matrix and the tribological performances were evaluated. The epoxy/aligned CNF composites were fabricated with different weight percentages of non-functionalized CNFs (0.2–2 wt%) with which friction and wear tests were carried out keeping sliding direction normal to fiber orientation. The wear resistance of 1 wt% random and aligned composites improved by 3.5 and 25 times, respectively, compared to pure epoxy (20 N load). Moreover, the friction coefficient reduced from 0.6 for pure epoxy to 0.44 and 0.24 for random and aligned CNF/epoxy composites, respectively. Improved thermal stability, normal load carrying capacity and lubricating effect of CNFs contributed to the superior wear resistance of aligned composites. |
Databáze: | OpenAIRE |
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