Journal
CARBON
Volume 75, Issue -, Pages 113-123Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.03.043
Keywords
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Funding
- Minister of Higher Education, Science and Technology, MESCYT, of the Dominican Republic [2008-1-B3-066]
- MESCYT
- PUCMM
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Multi-walled carbon nanotubes (MWCNTs) dispersed onto a silicon substrate have been coated with diamond nanocrystals (DNC) and silicon carbide (SiC) from solid carbon and silicon sources exposed to H-2 activated by hot filament chemical vapor deposition (HFCVD) at around 190 degrees C substrate temperature. MWCNT coating by DNC initiates during filament carburization process at 80 degrees C substrate temperature under conventional HFCVD conditions. The hybrid nanocarbon material was analyzed by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, electron energy loss spectroscopy, selected area electron diffraction, X-ray diffraction and Raman spectroscopy. The structure of the MWCNTs is preserved during coating and the smooth DNC/SiC coating is highly conformal. The average grain size is below 10 nm. The growth mechanism of DNC and SIC onto MWCNT surface is discussed. (C) 2014 Elsevier Ltd. All rights reserved.
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