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Preparation and mechanical properties of highly-aligned carbon micro-trees |
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| Authors: | Zhentao Li Chao Hu Chang Yu Horst Adams |
| Affiliation: | a Carbon Research Laboratory, Center for Nano Materials and Science, State Key Lab of Fine Chemicals, Dalian University of Technology, 158 Zhongshan Road, P.O. Box 49, Dalian 116012, China b Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, 158 Zhongshan Road, P.O. Box 49, Dalian 116012, China c Alcan Technology & Management AG, Badische Bahnhofstrasse 16, CH-8212 Neuhausen, Switzerland |
| Abstract: | Carbon micro-trees with a diameter of 15-25 μm were synthesized in an acetylene atmosphere by arc-plasma assisted chemical vapor deposition from a coal-based carbon anode using iron as catalyst. The as-obtained carbon micro-trees were studied by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, polarized light microscopy and Raman spectroscopy. It is found that the carbon micro-trees grow on the anode surface as highly-oriented arrays and have an anisotropic yet highly graphitized structure with a solid inner core. The Young’s modulus of the micro-trees was determined to be 0.4 TPa on average, which is comparable to that of carbon nanotubes reported in literature. |
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