Composite material, capacitor using the same, and their production methods

摘要

A composite material (A) includes a porous sintered body (12) and an insulation film (2) which covers the porous sintered body (12). The porous sintered body (12) is made of a combination of a metal element (12a) which has a melting temperature not lower than 1600° C., and a nonmetal element (12b, 12c). The insulation film (2) includes the nonmetal element (12b, 12c) and N.