Sintered metal bodies and manufacturing method therefor

Details Sintered metal bodies and manufacturing method therefor Sintered metal bodies and manufacturing method therefor

C - Chemistry, Metallurgy

22

C

C22C 1/04 (2006.01) B01D 53/94 (2006.01) B01J 23/86 (2006.01) B01J 32/00 (2006.01) C22C 32/00 (2006.01) C22C 33/02 (2006.01) F01N 3/24 (2006.01)

Patent

CA 2056501

Disclosed is a sintered metal body having a composition consisting essentially of, in percent by weight, about 5 to about 40 of chromium, about 2 to about 30 of aluminum, 0 to about 5 of special metal, 0 to about 4 of rare earth oxide additive, and the balance being iron group metal and unavoidable impurities, wherein the composition includes at least one component selected from component A and component B, component A being the special metal, and component B being at least an effective amount of the rare earth oxide additive to enhance the life of the body, the special metal being a first special metal component, and optionally, a second special metal component when the amount of the rare earth oxide additive is 0, the first special metal component consisting of at least one of: Y, lanthanides, Zr, Hf, Ti, Si, and B, and the second special metal component consisting of at least one of: alkaline earth metal, Cu, and Sn, and the special metal being a third special metal component when the amount of the rare earth oxide additive is >0, the third special metal component consisting of at least one of: Y, lanthanides, Zr, Hf, Ti, Si, alkaline earth metal, B, Cu, and Sn. The body has excellent oxidation resistance at high temperatures, heat resistance, and corrosion resistance, and can be suitably used by itself as a carrier for catalysts, for exhaust gas purification, etc., or as a monolith catalyst comprising catalyst carrier and catalyst supported thereon, or as a heater or catalytic converter by providing electrodes on the body.

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