Patent ID: 9583372
Date: 2017-02-28
CPC Classifications: B23K,C04B,H01L

Claim:
1. A joined body comprising a ceramic plate joined to a metal cylindrical member, the joined body including: a flange which is formed at an end of the cylindrical member so as to have an outer edge and a face surface that extends in parallel to a rear surface portion of the ceramic plate, an annular bank which is configured to project from the rear surface portion of the ceramic plate such that the bank has an edge that is chamfered or rounded and a face surface that extends in parallel to the rear surface portion, with the face surface of the bank opposing the face surface of the flange, and a brazed part which is formed in a space between the opposing face surfaces of the flange and the bank, wherein the flange has a width of 3 mm or more and a thickness of from 0.5 to 2 mm, with the edge of the bank that is chamfered or rounded facing the outer edge of the flange.