X-Ray Diffraction Line Profiles of Electrographitized Carbon Products

Abstract

The (001) diffraction line profiles of electrographitized carbon products were graphically separated into profiles of their component carbons. The products used for this experiment were made from a petroleum coke, a thermal black, or a furnace black and a binder pitch. The ratios of the integrated difiraction intensities of the component carbons were in good agreement with the mixing ratios of components, when the intensity of diffraction was corrected for the effect of preferrential orientation of graphite crystallities and for the weight loss in the process of graphitization. The lattice constant c/sub o/ and size of graphite crystallities L/sub c/ of graphitized coke derived from the binder pitch in the carbon products were found to be 6.74 approximates 6.83A and 280 approximates 130A, respectively, while c/sub o/ and L/sub c/ of coke derived from the same pitch without the admixture of carbon materials were 6.71 and 340A, respectively. The degree of graphitization of coke from the binder pitch in the cokebase products was found to be larger than that of coke from the binder pitch in the carbon black-base products. (auth)