Abstract

The graphitization behavior of cokes prepared from ethylene tar pitch (ETP) hydrogenated at temperatures from 473 to 673 K has been studied by magnetoresistance measurements at liquid nitrogen temperature and by scanning electron microscopy. Graphitization heat treatment of the cokes was carried out at 3273 K. Hydrogenation temperatures of 473 and 523 K resulted in graphitized cokes with random layer plane textures and low degrees of graphitization. Hydrogenation at higher temperatures was effective in promoting development of flow-type textures during graphitization. The coke from ETP hydrogenated at 673 K showed the highest graphitizability, preferred orientation and flow-type texture developed by heat treatment.

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