Electronic properties of pan-based carbon fibers—I
| Autor: | Ian L. Spain, K.J Volin, H.A Goldberg, Ilmar L. Kalnin |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Range (particle radiation)
Materials science Carbon fibers General Chemistry Condensed Matter Physics Electrical resistivity and conductivity visual_art Heat treated visual_art.visual_art_medium General Materials Science Fiber Composite material Electronic energy Elastic modulus Electronic properties |
| Zdroj: | Journal of Physics and Chemistry of Solids. 44:839-849 |
| ISSN: | 0022-3697 |
| DOI: | 10.1016/0022-3697(83)90018-5 |
| Popis: | Measurements of the resistivity of PAN-based fibers are reported for temperatures between 1.5 and 300 K. Particular care was taken to avoid sample heating problems during measurements. Fibers were heat-treated between ~ 1300°C to above 3000°C, corresponding to a wide range of elastic moduli (~ 35–112 Msi : 240–770 GPa). A particularly surprising result was the observation of a resistivity maximum for low modulus (35 Msi ~240 GPa) fiber below 50 K. Results are compared to those reported on bulk heat treated carbons and pyrocarbons. A qualitative discussion of the results is also given in terms of recent models of the electronic energy levels of carbon ribbons and turbostratic carbons. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|