Patent ID: 9643893
Date: 2017-05-09
CPC Classifications: C04B,H05B

Claim:
1. A method of manufacturing a joint body of a conductive ceramic body and a conductive metal body comprising: an abutting step of abutting the ceramic body and the metal body on each other; and a joining step of joining the ceramic body and the metal body to each other by applying a voltage between the ceramic body and the metal body to pass a current to an abutment surface between the ceramic body and the metal body to thereby heat the abutment surface, wherein the joining step includes: a first electrical heating step of heating up the abutment surface to a predetermined temperature T1 within a temperature range between (Tr-220)° C. and (Tr-50)° C. in a period longer than 10 seconds, Tr being a recrystallization temperature of the metal body; a second electrical heating step of increasing the temperature of the abutment surface from the temperature of T1 and heating the abutment surface for a period longer than 5 seconds at a predetermined temperature T2 within a temperature range between Tm×0.3° C. and Tm×0.45° C., Tm being a melting point of the metal body; and a third electrical heating step of increasing the temperature of the abutment surface from the temperature of T2 and heating the abutment surface for a period longer than 3 seconds at a heating temperature higher than Tm×0.48° C. and lower than Tm×0.6° C.