Metallic honeycomb body for supporting catalyst and production method thereof

摘要

PCT No. PCT/JP94/00205 Sec. 371 Date Oct. 12, 1994 Sec. 102(e) Date Oct. 12, 1994 PCT Filed Feb. 10, 1994 PCT Pub. No. WO94/17911 PCT Pub. Date Aug. 18, 1994A metallic honeycomb body for supporting a catalyst comprises a flat plate and a corrugated plate; these plates are formed by a foil of stainless steel in which the steel contains more than 1% of Si and the surface of the steel is covered by a film which is mainly formed by an oxide chrome at a high temperature, and are mutually bonded by diffusion bonding. The chemical composition of the foil material is comprised of up to 0.2% of C, more than 1 to 5% of Si, 9 to 22% of Cr, up to 0.8% of Al, and as necessary, at least one member selected from the group of Nb, V, Mo W and REM (rare earth member) including Y. The metallic honeycomb body is formed by which said body is annealed at a vacuum degree of 10-2 to 10-4 Torr and in a temperature range of 1200 DEG to 1300 DEG C. for 1 to 30 minutes in a vacuum annealing furnace.