Oxidation resistant ferrous base foil and method therefor

Details Oxidation resistant ferrous base foil and method therefor Oxidation resistant ferrous base foil and method therefor

1985-06-04

1987-08-11

Buffalow, Edith

Stock material or miscellaneous articles

All metal or with adjacent metals

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

427431, 428469, 502314, B32B 2705

Patent

active

046861556

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% chormium, 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, which 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.

REFERENCES:
patent: 2170361 (1939-08-01), Whitfield
patent: 3059326 (1962-10-01), Jominy et al.
patent: 3214820 (1965-11-01), Smith et al.
patent: 3867313 (1975-02-01), Brewer
patent: 4188309 (1980-02-01), Volker et al.
patent: 4414023 (1983-11-01), Aggen et al.
patent: 4624895 (1986-11-01), Nickola

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