Journal
MATERIALS LETTERS
Volume 43, Issue 5-6, Pages 291-294Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-577X(99)00276-1
Keywords
carbon fiber; carbon nanofiber; heat treatment
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Carbon fibers with average diameter 60nm were mass-produced by the floating catalyst method. Structure characteristics of these as-grown carbon nanofibers were investigated through high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). It was shown that poor graphitization is the main question for engineering application of the carbon nanofibers. To obtain high quality carbon nanofibers, as-grown nanofibers were annealed at 2500 degrees C for 30 min under protection of an Ar atmosphere, and the structure of carbon nanofibers annealed were investigated through HRTEM and XRD. Microstructure change of the carbon nanofibers was discussed after annealing treatment. (C) 2000 Elsevier Science B.V. All rights reserved.
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