MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF PHYSICS
Room temperature Raman microprobe x-ray diffraction and electrical resistivity measurements have been performed on carboncarbon composites made from mesophase pitch which were heat treated at temperatures above 2680 Celsius. 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 greater than 1000 Angstroms. The c-axis crystallite dimensions were determined by analysis of x ray diffraction peak widths to be approximately 150 Angstroms. Copper chloride was successfully reacted with these carbon-carbon composites forming a stage three graphite intercalation compound in both the fibers and the matrix, as determined by their Raman spectra. Keywords Carbon carbon composites, Raman characterization carbon carbon composites, Electronic and Structural characterization of carbon carbon composites.
Rept. for 1 Sep 86-31 Aug 87,
Prepared in cooperation with Nuclear Aerospace Materials Corp., Poway, CA. DOI: 10.21236/ADA191729