Enhanced oxide whisker growth on cold-rolled aluminum-...

Details Enhanced oxide whisker growth on cold-rolled aluminum-... Enhanced oxide whisker growth on cold-rolled aluminum-...

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B01D 53/94 (2006.01) B01J 23/86 (2006.01) B01J 37/02 (2006.01) C23C 8/12 (2006.01) C23C 8/14 (2006.01) F01N 3/28 (2006.01)

Patent

CA 1176920

D-4780 C-3256 ENHANCED OXIDE WHISKER GROWTH ON COLD-ROLLED ALUMINUM-CONTAINING STAINLESS STEEL FOIL Abstract of the Disclosure Alumina whiskers are grown on cold-rolled Fe-Cr-Al alloy foil by a two-step oxidation treatment. A bare metal surface is initially oxidized by heating while exposing to a predominantly inert atmosphere containing 0.1 volume percent oxygen or less. There- after, the surface is further oxidized by heating while exposing to air to grow the whiskers. In a preferred embodiment, whisker-covered foil is coated with a catalyst-bearing alumina layer and-suitably wound into a structure for use in an automotive catalytic converter.

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