Electronic and structural studies of carbon/carbon composites
| Autor: | G.L. Doll, R.M. Sakya, J.T. Nicholls, J.S. Speck, M.S. Dresselhaus, G.B. Engle |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Microprobe
Materials science Mechanical Engineering Intercalation (chemistry) Metals and Alloys Reinforced carbon–carbon Mesophase Condensed Matter Physics Electronic Optical and Magnetic Materials symbols.namesake Electrical resistance and conductance Mechanics of Materials Electrical resistivity and conductivity Materials Chemistry symbols Crystallite Composite material Raman spectroscopy |
| Zdroj: | Synthetic Metals. 23:481-486 |
| ISSN: | 0379-6779 |
| Popis: | Room temperature Raman microprobe, (00 l ) x-ray diffraction and electrical resistivity measurements have been performed on carbon/carbon composites made from mesophase pitch which were heat treated (T HT ) at 2680°C, 2820°C and 3015°C. Results of these measurements indicate that both the ex-pitch carbon fiber and mesophase pitch matrix constituents of the composites were highly graphitic, exhibiting in-plane crystallite dimensions (L a ) greater than 1000 A for this range of T HT values. The c-axis crystallite dimensions (L c ) were determined by analysis of x-ray diffraction peak widths to be ∼ 150 A . CuCl 2 was successfully reacted with T HT = 3020°C composites forming a stage 3 intercalation compound in both the fibers and the matrix, as determined by their Raman spectra. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|