Characterization of unordered carbon using Warren-Bodenstein's equation

摘要

A new method is presented for characterizing the microstructure of unordered carbon, in which the observed X-ray diffraction pattern is assumed to be the superposition of the patterns of component crystallits of differing heights L_c and widths L_a but fixed interlayer spacing d_002, calculated using Warren-Bodenstein's equation. The weights of the components are obtained from a least squares analysis and used to calculate mean values and . Results obtained from analysis of X-ray measurements of mesocarbon microbeads heat-treated in the range 700 to 1400 deg C are compared with those obtained from analyses by Diamond's method for single layer plane distributions and Hirsch's method for layer plane distributions.