| 摘要 |
PURPOSE:To provide a catalyst carrier excellent in thermal impact resistance, durability and high temperature strength by providing the catalyst carrier with a fire resisting metal fiber in a superalloy substrate composed of iron, cobalt or nickel base. CONSTITUTION:A catalyst carrier for cleaning up exhaust gases from a burner, vehicle, etc., consists of the heat resisting composite of the superalloy substrate composed of iron, cobalt or nickel base represented by MCrAlX (wherein M is Fe, Co and Ni or its alloy and X is an oxide fixing element such as Zr and Y) and a fire resisting metal fiber such as tungsten alloy provided therein. The use of such heat resisting composite wherein the high temperature strength of the superalloy is enhanced by the aforesaid fire resisting metal fiber imparts to the carrier a sufficient high temperature strength withstanding high service temperatures as high as not less than 1000 deg.C and also the heat resisting composite including such metal group imparts thereto excellent thermal impact resisting characteristics even if it is subjected to the repetitive thermal loads of alternately a high and normal temperature. |
