Abstract
Abstract Pyrolytic graphites were deposited on carbon rods by the thermal decomposition of a commercial propane gas at various temperatures and at various rates of gas flow. The orientation functions of the graphite crystallites in the deposited graphites were measured by means of the X-ray diffraction method. It was shown that the degree of orientation in the deposited graphites increased with the increase in the temperature of deposition and decreased with the increase in the rate of gas flow. The graphites deposited at temperatures above 2000°C were composed of two layers; the inner layers had a larger degree of orientation and a higher graphitizability than the outer layers. Almost all the (0 0 l) diffraction profiles of the deposited graphites were found to be asymmetrical and to the apparently composed of two kinds of profiles, whose c0 values were 6.72 and 6.86Å.
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