| 摘要 |
PURPOSE:To obtain a carbon material having improved content of carbonized component and bulk density of a covering layer as well as improved tightness of adhesion of the covering layer by energizing electric current through a carbon base material impregnated with an org. compd. such as alcohol, pitch in an electrolyte soln., and carbonizing the org. compd. after polymerizing it. CONSTITUTION:One of org. compds. among alcohols such as furfuryl alcohol, hydrocarbons such as benzene, glycols, sugars, pitch, or a mixture thereof is impregnated into voids such as pores, of a carbon material 1 or into spaces 3 thereof, and adhered to the external surface thereof. Then, the base material 1 is dipped in a soln. 2 of an electrolyte contg. a supporting electrolyte, and an electric current is energized through the soln. from an electrode comprising the base material 1. Thus, the org. compd. is polymerized. A thermally set covering layer 5a, 5b is formed by heating and hardening the base material 1 and completing the polymn., and the covering layer is simultaneously dehydrated and gases contained in the layer are expelled by calcining the base material and carbonizing the polymerized product. |
