ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The microvoids in PAN-based carbon fibres covering a wide range of crystallite size were measured by the method using small-angle X-ray scattering on fibre bundles, and the fractional content of voids and the parameters representing the cross-sectional size of voids perpendicular to the fibre axis were determined. The variation in the shape and size distribution of voids with crystallite thickness was considered by introducing an elliptical crosssection model and a cross-sectional size distribution model. The electron density distribution in the inside of a void was also considered. It is concluded that the electron density difference between a void and the solid surrounding the void is relatively larger in the periphery than in the inner part of a void, and that the electron density in the inner part of a void decreases with increasing crystallite thickness.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01106569
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