Production process of ferrite stainless steel covered with oxide

Details Production process of ferrite stainless steel covered with oxide Production process of ferrite stainless steel covered with oxide

1989-08-15

1991-10-08

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

502439, F01N 310

Patent

active

050551450

ABSTRACT:
This invention concerns a production process of ferrite stainless steel covered with oxide whisker suitable for metal catalyst supports in automobile's exhaust gas converters, which comprises controlling the continued growth of alumina whiskers on ferrite stainless steel by heating ferrite stainless steel having alumina whiskers on the surface to 1000.degree.-1200.degree. C. for about 1 minute to 1 hour in a non-oxidizing atmosphere.

REFERENCES:
patent: 4331631 (1982-05-01), Chapman
patent: 4729912 (1988-05-01), Kilbane
patent: 4837091 (1989-06-01), Nickola
patent: 4915751 (1990-04-01), Vaneman

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