Production process of ferrite stainless steel covered with oxide whisker
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United States of America Patent
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Oct 8, 1991
Issued Date -
N/A
app pub date -
Aug 15, 1989
filing date -
Nov 30, 1987
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Expired
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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.
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