Surface graphitization of Furan-resin-derived carbon Original Research Article

Furan-resin-derived carbon generally produces a glass-like carbon having entangled graphene layers (graphite structure) after high temperature heat-treatments. However, Raman spectroscopy reveals that it produces well-graphitized thin skins on surfaces. The graphitization is promoted on the faces that are formed at lower heat-treatment temperatures. Fractured faces of specimens pre-heat-treated at 1000°C result in well-developed structures in graphitization after re-heat-treatment at 3000°C. It is considered that the surfaces, i.e. free faces, play an important role in the graphitization.