Orientation of carbon Nano-Fiber in carbon/silica composite prepared under high magnetic field

N. Kitamura, K. Fukumi, K. Takahashi, I. Mogi, S. Awaji, K. Watanabe

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

Carbon/silica composite films were prepared from colloidal silica aqueous solution in which vapour grown carbon nano-fibers dispersed. The orientation of nano-fibers was attempted by dip-coating substrates under high magnetic field up to 10 T. The fibers started to align along the direction of magnetic field below 1 T. The degree of orientation was saturated at about 6 T. The anisotropic susceptibility, Δχχ//, was estimated to be (3.051.10)×10-7 cm3/mol from the fitting of numerical simulation. It was smaller than that reported in previous studies. It was deduced that perturbation of fiber orientation in the sol during drawing and drying, and the existence of coupled fibers in the starting materials suppressed the orientation of fibers.

Original languageEnglish
Article number052008
JournalIOP Conference Series: Materials Science and Engineering
Volume18
Issue numberSYMPOSIUM 2C
DOIs
Publication statusPublished - 2011
Event3rd International Congress on Ceramics, ICC3 - Osaka, Japan
Duration: 2010 Nov 142010 Nov 18

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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