Journal article
Carbon structures in silicon carbide derived carbon
Journal of materials processing technology, Vol.179(1)
2006
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Carbide derived carbon (CDC) produced by etching SiC in halogens has been investigated using transmission electron microscopy (TEM). Depending on experimental conditions, CDC may contain sp
3- or sp
2-bonded carbon phases. Amorphous carbon, poorly ordered turbostratic carbon with lattice spacing exceeding values of 0.35
nm as well as highly ordered graphite were observed. sp
3-Bonded structures consist of mainly lonsdaleite and cubic diamond nanocrystals. Hexagonal diamond polytypes and n-diamond have been synthesized. During the annealing process, diamond nanocrystals eventually transform to sp
2-bonded carbons. The transformation process of hexagonal diamond nanocrystals produces spherical onion type structures. These structures appear either hollow or dense. The latter shows a decrease in lattice spacing compared to
d/
n values for graphite. Graphitic structures include multi-wall nanotubes, polyhedral particles and ribbons. The graphitization during chlorination of samples may eventually lead to the formation of planar graphite.
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Details
- Title
- Carbon structures in silicon carbide derived carbon
- Creators
- Sascha Welz - University of Illinois at Chicago, Department of Civil and Material Engineering, 842 West Taylor St., Chicago, IL 60607, USAMichael J McNallan - University of Illinois at Chicago, Department of Civil and Material Engineering, 842 West Taylor St., Chicago, IL 60607, USAYury Gogotsi - Drexel University, Department of Materials Science and Engineering, Philadelphia, PA 19104, USA
- Publication Details
- Journal of materials processing technology, Vol.179(1)
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991014877981504721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Industrial
- Engineering, Manufacturing
- Materials Science, Multidisciplinary