Abstract: A method of manufacturing a carbon material that can prevent formation of unevenness of a coating film and degradation in adhesivity of the coating film, by inhibiting a carbon substrate from forming a portion in which a metal carbide layer is not formed. The method is characterized by including a first step of causing metal powder to adhere to a carbon substrate by coating the carbon substrate with a slurry containing the metal powder and polyvinyl alcohol as a binder, and a second step of heat-treating the carbon substrate to which the metal powder has adhered in a vessel containing an atmosphere of hydrogen chloride gas.

Abstract: When treated with a halogen gas, a carbon material can inhibit emission of an impurity after the treatment. A method of manufacturing the carbon material is also provided. A carbon material is subjected to an annealing process under a reduced pressure of from 1 to 10000 Pa in a H2 gas atmosphere at 500° C. to 1200° C. The duration of the annealing process is from 1 minute to 20 hours. This makes it possible to control the concentration of the halogen emitted, such as chlorine, to 5 ppb or less.