The electronic and structural characteristics of carbon fibers from mesophase pitch
- 1 January 1979
- journal article
- Published by Elsevier BV in Carbon
- Vol. 17 (1), 59-69
- https://doi.org/10.1016/0008-6223(79)90071-x
Abstract
The electronic properties (resistivity, magnetoresistance, and electron spin resonance) of mesophase pitch-based carbon fibers have been studied in relation to the fiber structure and processing conditions. Reproducible correlations between the electronic properties and the structure demonstrate that the electronic properties are a sensitive indicator of the degree of graphite order in the fibers. Fibers having radial transverse structure are more easily graphitized than fibers with random transverse structure. The effect of differences in the thermosetting procedure is relatively unimportant. The ultimate degree of graphitization attainable by these fibers is comparable to that of similarly heat-treated pyrolytic carbons, whereas PAN-based carbon fibers are ultimately capable only of properties comparable to pitch-based fibers treated in the 1700–2300°C range.Keywords
This publication has 15 references indexed in Scilit:
- Technique for conductivity measurements on single crystals of organic materialsReview of Scientific Instruments, 1975
- Magnetoresistance and Microstructure of Stress-graphitized Carbon FibersTANSO, 1974
- The importance of strain in crystallite size determinations in graphiteCarbon, 1973
- Electronic properties of high-temperature carbon fibres and their correlationsJournal of Physics D: Applied Physics, 1973
- Some electronic properties of polyacrylonitrile-based carbon fibresJournal of Physics D: Applied Physics, 1972
- An electron spin resonance study of carbon fibres based on polyacrylonitrileJournal of Physics D: Applied Physics, 1971
- Electronic Properties of Carbonized Polyacrylonitrile FibersCarbon, 1964
- Electron Spin Resonance in Polycrystalline GraphiteThe Journal of Chemical Physics, 1962
- Electron Spin Resonance in Complexes of Aromatic Hydrocarbons with IodineThe Journal of Chemical Physics, 1961
- Electron Spin Resonance Absorption in Metals. I. ExperimentalPhysical Review B, 1955