Patent ID: 6689328
Filing Date: 2004-02-10
Classification: B01J,B21D,B23K,F01N,Y10T

Abstract:
A metal honeycomb body for an exhaust gas purification catalyst, said honeycomb body comprising:a plurality of alternate layers of flat metal foil and corrugated metal foil, with adjacent layers in contact with one another, said flat metal foil and said corrugated metal foil being ferrite heat-resistant high alloy steel; at least one of said flat metal foil and said corrugated metal foil having a foil thickness of less than 40 &mgr;m; said flat metal foil and said corrugated metal foil having a width-wise direction perpendicular to a rolling direction of said metal foils; said flat metal foil and said corrugated metal foil having a surface roughness specified by an arithmetical mean deviation Rac within a range of 0.001 to 0.3 &mgr;m in the direction perpendicular to the rolling direction of said metal foils; contact portions between said flat metal foil and said corrugated metal foil bonded by solid phase diffusion bonding; wherein Al content in both said flat metal foil and said corrugated metal foil is at least 3.0%.