Filter member for purifying exhaust gas and method for manufacturing the
same
    4.
    发明授权
    Filter member for purifying exhaust gas and method for manufacturing the same 失效
    净化废气的过滤构件及其制造方法

    公开(公告)号:US5830415A

    公开(公告)日:1998-11-03

    申请号:US390995

    申请日:1995-02-21

    摘要: The present invention provides a car exhaust purifying filter member which is high in the capacity to collect solid and liquid contents in exhausts and which has such high heat resistance as to be capable of withstanding heat when burned for cleaning and a method of manufacturing the same. A three-dimensional mesh-like metallic porous member made from Ni--Cr--Al and having a three-dimensional framework is heated at 800-1000 .degree. C. in the atmosphere to form on its surface a densely grown fibrous alumina crystal. This member is used as a filter member. Such a filter member shows excellent collecting capacity and corrosion resistance and can withstand high temperatures. Also, it is possible to firmly carry a catalyst on the fibrous alumina crystal formed on the surface. Because of its increased surface area, it has an increased catalyst carrying capacity.

    摘要翻译: 本发明提供了一种汽车排气净化过滤器构件,其具有在排气中收集固体和液体内容物的能力高,并且具有如此高的耐热性,以便在被清洁时能够承受热量及其制造方法。 将由Ni-Cr-Al制成并具有三维骨架的三维网状金属多孔构件在大气中在800-1000℃下加热,在其表面上形成致密生长的纤维状氧化铝晶体。 该构件用作过滤构件。 这种过滤器构件显示出优异的收集能力和耐腐蚀性,并且能够承受高温。 此外,可以在形成在表面上的纤维状氧化铝晶体上牢固地携带催化剂。 由于其表面积增加,催化剂承载能力增加。