Method for manufacturing ceramic sintered body, method for manufacturing capacitor, method for manufacturing solid oxide fuel cell, method for manufacturing water electrolysis device, and method for manufacturing hydrogen pump

摘要

A method for manufacturing a ceramic material includes a step of performing heat treatment in a reducing atmosphere on a ceramic material in which a metallic oxide is diffused in crystal grains, thereby to reduce the metallic oxide to deposit a metallic element at grain boundaries of the ceramic material.