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TEM Observations of Surface Graphitization and Interior Microstructural Changes in a Furan-Resin-Derived Carbon

Published online by Cambridge University Press:  01 February 2011

Junji Yamanaka ,
Eiichi Yasuda ,
George C. Weatherly  and
Yasuhiro Tanabe
Junji Yamanaka
Affiliation:
Visiting from: Center for Crystal Science and Technology, Faculty of Engineering, Yamanashi University, Kofu 400-8511, Japan.
Eiichi Yasuda
Affiliation:
Center for Materials Design, Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
George C. Weatherly
Affiliation:
McMaster University, Dept of Materials Science and Engineering, Hamilton, ON, L8S 4M1 Canada.
Yasuhiro Tanabe
Affiliation:
Center for Materials Design, Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Abstract

Furan-resin-derived carbon structures have attracted interest as a component in carbon based composite materials. We have investigated the microstructures of furan-resin-derived carbon by transmission electron microscopy after high-temperature heat treatments. We observed that graphitization occurred at the surface even although furan-resin-derived carbon is believed to be a non-graphitizable carbon. On the other hand the interior of the specimens exhibited a cage-like structure. Specimens heat-treated at higher temperatures exhibited a well-developed cage structure, as evidenced by the number of stacked layers and their periodicity. Post-column type EELS was utilized to study the chemical state of the interior of the specimens. All of the EELS spectra had a characteristic edge structure showing the existence of π bonding. There were not significant differences between the spectra of early-stage and well-developed cage structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 733: Symposium T – Polymer Nanocomposites , 2002 , T3.6
Copyright
Copyright © Materials Research Society 2002

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