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The analysis of the electrical conductivity of graphite conductivity of graphite powders during compaction
Abstract
The conductivity of four graphite powders was measured as a function of the volume fraction of graphite (or air) along (axial) and across (transverse) the direction of compression. The conductivity varies by between two and four orders of magnitude during these measurements. The results are shown to fit an equation which expresses the conductivity of the mixture as a function of the conductivity of the graphite and two morphology parameters. One parameters is the critical volume fraction, at which the graphite-air mixture would become insulating (percolation threshold) and the other an exponent is a combination of the effective demagnetisation coefficients of the grains and the critical volume fraction. Electron micrographs of the powder grains are shown and volume orientation percentage measurements of the graphite using X-rays were made in order to try to understand the results better.
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Citations
Cited by
Efficient Reduction of Graphite Oxide by Sodium Borohydride and Its Effect on Electrical Conductance
Shin, H., Kim, K. K., Benayad, A., Yoon, S., Park, H. K., Jung, I., Jin, M. H., Jeong, H., Kim, J. M., Choi, J., et al. (2009) · Advanced Functional Materials · doi:10.1002/adfm.200900167 · Cited by 2,283
Electrical Resistivity of Composites
McLachlan, D. S., Blaszkiewicz, M., & Newnham, R. E. (1990) · Journal of the American Ceramic Society · doi:10.1111/j.1151-2916.1990.tb07576.x · Cited by 1,447
Self-citationGram-scale production of graphene based on solvothermal synthesis and sonication
Choucair, M., Thordarson, P., & Stride, J. A. (2009) · Nature Nanotechnology · doi:10.1038/nnano.2008.365 · Cited by 1,112
Graphene oxide and its reduction: modeling and experimental progress
Mao, S., Pu, H., & Chen, J. (2012) · RSC Advances · doi:10.1039/c2ra00663d · Cited by 522
Purification, application and current market trend of natural graphite: A review
Jara, A. D., Betemariam, A., Woldetinsae, G., & Kim, J. Y. (2019) · International Journal of Mining Science and Technology · doi:10.1016/j.ijmst.2019.04.003 · Cited by 465
Metadata
- Authors
- Deprez, N., & McLachlan, D. S.
- Venue
- Journal of Physics D: Applied Physics
- Publisher
- IOP Publishing
- Published
- 1988-01-14
- Volume
- 21
- Issue
- 1
- Pages
- 101-107
- ISSN
- 0022-3727 (ISSN-L)
- 1361-6463
- OpenAlex
- W2021650639
- Cited by
- 190
- References
- 0
- FWCI
- 2.16
- Type
- journal article
- Language
- en
- Open access
- closed
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- Deprez, N., & McLachlan, D. S. (1988). The analysis of the electrical conductivity of graphite conductivity of graphite powders during compaction. Journal of Physics D: Applied Physics. https://doi.org/10.1088/0022-3727/21/1/015
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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