Studies on Graphitisation I.

Abstract

Petroleum coke, pitch coke, charcoal, acetylene black and anthracite were exposed to heat treatment, and their degrees of graphitisation were estimated by specific gravity measurement, graphitic acid analysis and X-ray particle size determination. These values were mutually compared, and correlations were calculated.The specific gravity value is greatly influenced by the kind of raw material, but the rate of its increase has rather good mutual relation to the graphitic acid analysis value and the height of orienteted graphite layers (calculated from the (hkl) line breadth). Their coefficients of correlation are 0.90 and 0.82 respectively. The graphitic acid analysis value and the height of orienteted graphite layers are also combined with the coefficient 0.89.