| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroconductive ceramic sintered compact having an electrical conduction property (electrical conductivity of at least 1,000 S/m or more) higher than that of a conventional one by equalizing the dispersion of a carbon material serving as an electroconductive material and the formation of a three-dimensional network.SOLUTION: The electroconductive ceramic sintered compact is an electroconductive ceramic sintered compact in which a carbon thin film is formed in grain boundary regions of the sintered compact of oxide particles. The oxide particles are formed of one or more selected from aluminum oxide, silicon oxide and aluminosilicate. The carbon thin film is composed of a graphene film, deposited parallelly on the surface of each oxide particle to cover the surface by a chemical vapor deposition method using a carbon-containing compound as a raw material, and further, the carbon thin film is three-dimensionally, electrically connected in the sintered compact by sintering the oxide particles each covered with the deposited graphene film by a discharge plasma sintering method, and thereby, the electrical conductivity of the sintered compact is 1,000 S/m or higher. |
