| 摘要 |
PROBLEM TO BE SOLVED: To provide a metallic carrier which can undergo severer condition for a quickly heating-quenching thermal cycle caused by exhaust gas of an engine and has excellent durability. SOLUTION: Unjoined parts 11, in which a flat foil and a wavy foil are not joined, are formed in the position of the inside from the outer periphery apart from the center axis 10 of a metallic honeycomb body 2 by at least 1/2 of radius R in length of (9/20-9/10) of the total length L of the metallic honeycomb body 2 from one end becoming an outlet side of gas by at least one round in the whole circumference. The other part is joined by diffusion and joining. Furthermore, a joined part 13 with length of <=1/2 of the total length L is formed toward the outlet side of gas while keeping the position apart from one end becoming the inlet side of gas by >=1/3 of the total length L as the starting point in the boundary of the metallic honeycomb body 2 and an outer cylinder 3. The other parts of the boundary are unjoined parts 12. Thereby, the metallic honeycomb body 2 undergoes repeated heating at high temperature of >=950 deg.C and loss of the metallic honeycomb such as a fragment is prevented. |
