CR3C2 CERAMIC-METAL JOINED BODY AND ITS JOINING METHOD

摘要

PURPOSE:To obtain a joined body free from defects such as cracks and usable at a high temp. by interposing a stress relieving material obtd. by holding a soft metal sheet between leaves of Ni brazing filler metal between a Cr3C2 ceramic member and a metal member and joining the members. CONSTITUTION:A laminated material obtd. by holding a soft metal sheet 31 having a lower Young's modulus and lower yield strength than a Cr3C2 ceramic member 1 and a metal member 2 to be joined and a higher m.p. than the joining temp. between leaves of Ni brazing filler metal 32 is prepd. as a joining member 3. This member 3 is interposed between the ceramic member 1 and the metal member 2 and they are heat-treated in an inert gaseous atmosphere to joint the members 1, 2. The heat treatment is carried out at a temp. above the liquids line of the Ni brazing filler metal.