Modifications of multi-wall carbon nanotubes with B-containing vapor and their effects on the properties of boron carbide matrix nanocomposites.
Multi-wall carbon nanotubes were modified by heating them together with elemental boron powder. B4C crystals grew on the surfaces of the nanotubes, and electron diffraction patterns showed an orientation dependence of the surface B4C and the underlying carbon in the nanotubes. There was no reaction of the nanotubes with solid B2O3 alone. Composites of the modified nanotubes in a B4C matrix showed a small increase of density over sintered B4C.
Herth
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Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Miranda
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Doremus
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Siegel
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