CERAMIC JOINT BODY, CERAMIC FLOW CHANNEL BODY AND HEAT EXCHANGER INCLUDING THE CERAMIC FLOW CHANNEL BODY

摘要

PROBLEM TO BE SOLVED: To provide a ceramic joint body having high joint strength, to provide a ceramic flow channel body obtained by disposing a flow channel on the ceramic joint body, and to provide a heat exchanger including the ceramic flow channel body.SOLUTION: A ceramic joint body 20 is obtained by joining a first member 1 to a second member 2, each of which members comprises a silicon carbide sintered compact, while interposing a joint layer 3 therebetween, which layer contains silicon carbide and metallic silicon. The joint layer 3 has a first area 4, which exists between the first member 1 and the second member 2, and a second area 5, which exists across both of the first member 1 and the second member 2 on the outside of the first area 4. Metallic silicon lumps each having 100 μm length exist on the joint surface of at least one of the first member 1 and the second member 2 in the second area 5.SELECTED DRAWING: Figure 1