Patent ID: 9242445
Filing Date: 2016-01-26
CPC Classification: B01D,B23K,B32B,C04B

Claim Text:
1. A method for producing a bonded body of a ceramic body made from a ceramic material and a metal body made from a metal material, comprising the steps: arranging the ceramic body, the metal body, a gap layer having a property preventing oxidation, a first intermediate layer and a second intermediate layer such that, in an arranging direction the gap layer is between the ceramic body and the metal body, the first inter mediate layer is between the ceramic body and the gap layer, and the second intermediate layer is between the gap layer and the metal body, linear expansion coefficients of the first and second intermediate layers being between those of the ceramic body and the metal body; performing diffusion bonding between the ceramic body and the first intermediate layer in parallel with diffusion bonding between the metal body and the second intermediate layer; removing at least a part of the gap layer from between the first and second intermediate layers; and bonding the first and second intermediate layers to each other, wherein in the step of performing the diffusion bonding, the gap layer prevents formation of an oxidized film on gap layer side surfaces of the first and second intermediate layers, and heat conduction between the diffusion bonding portion of the ceramic body and the first intermediate layer and the diffusion bonding portion of the metal body and the second intermediate layer.