期刊
CARBON
卷 40, 期 4, 页码 551-555出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-6223(01)00139-7
关键词
carbon fibers; X-ray diffraction; textures
The new technique of scanning microbeam X-ray diffraction is used to get information about the axial as well as the cross-sectional crystallographic texture of single PAN- and mesophase-pitch-based carbon fibers. The resulting preferred orientation in the axial direction is considerably higher than the values obtained from conventional X-ray diffraction measurements on fiber bundles. A change in azimuthal width of the 002 reflection was observed across some of the fibers, which can be attributed to a radial folded cross-sectional texture for pitch-based fibers, and to a different preferred orientation of skin and core layers for PAN-based fibers. (C) 2002 Elsevier Science Ltd. All rights reserved.
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