Patent ID: 8246847

Claim:
A separating method for a conductive ceramics sintered body, comprising an immersion step of immersing a glass with a conductive ceramics sintered body in an aqueous solution for separation, the aqueous solution having etching ability for at least one of the glass and the conductive ceramics sintered body, so as to separate the conductive ceramics sintered body from the glass; wherein the conductive ceramics sintered body is attached on a dark ceramics sintered body; and wherein the immersion step includes a first immersion step of immersing the glass with the conductive ceramics sintered body attached on the dark ceramics sintered body in an acidic aqueous solution containing hydrochloric acid and separating the glass with the dark ceramics sintered body from the conductive ceramics sintered body, and a second immersion step of immersing the glass attached with the dark ceramics sintered body, which is separated from the conductive ceramics sintered body in the first immersion step, in an acidic aqueous solution containing fluorine ions and separating the glass attached with the dark ceramics sintered body into the dark ceramics sintered body and the glass.