Oxidation resistant ferrous base foil

Details Oxidation resistant ferrous base foil Oxidation resistant ferrous base foil

1987-05-08

1989-01-10

Sheehan, John P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428629, 428653, 502314, 502327, 502527, B01J 2102

Patent

active

047973293

ABSTRACT:
Aluminum coated ferritic base metal foil formed by cold reduction of hot dip aluminum coated ferritic steel strip containing from 10% to about 35% chromium, up to 3% aluminum, and up to 1% silicon, the foil having a ratio of aluminum coating thickness on both sides to base metal foil thickness of at least 1:10, with at least 4% by weight total aluminum. The method of production includes heating the foil in an oxidizing atmosphere within specified temperature and time limitations to provide a porous surface having a thin layer of aluminum oxide. The foil is adapted for fabrication into monolithic support structures for catalytic converters for internal combustion engine exhaust systems.

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patent: 4601999 (1986-07-01), Retallick et al.
patent: 4624895 (1986-11-01), Nickola
patent: 4686155 (1987-08-01), Kilbane et al.

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