Ferritic stainless steel coated with a blade oxide and its manufacturing process
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United States of America Patent
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Jul 28, 1992
Grant Date -
N/A
app pub date -
Apr 16, 1990
filing date -
Apr 17, 1989
priority date (Note) -
Expired
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Abstract
A ferritic stainless steel, of which the surface is coated with a blade-like aluminum oxide, is disclosed. The ferritic stainless steel can be manufactured by heating a ferritic stainless steel containing aluminum at the surface in a stream of purified air. The aluminum-containing stainless steel possesses improved adhesiveness to catalyst carrier which can be utilized in a honeycomb metal structure for a catalytic converter for automobile exhaust gases or in a catalytic device for purifying combustion gases.
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