Diesel particulate filter and method of making

Abstract

A filter assembly for a diesel particulate filter is provided, the filter assembly having: a first end disk; a second end disk; a center tube secured to the first end disk by a sealing glass; a filter media secured to the first end disk and the second end disk by a sealing glass.

1 . A filter assembly for a diesel particulate filter, the filter assembly comprising:
 a first end disk;   a second end disk;   a center tube secured to the first end disk by a sealing glass; and   a filter media secured to the first end disk and the second end disk by a sealing glass, wherein the first end disk, the second end disk, the center tube and the filter media comprise an alumina and wherein the sealing glass has a coefficient of thermal expansion that matches alumina.   
     
     
         2 . The filter assembly as in  claim 1 , wherein the first end disk, the second end disk, the center tube further comprise ceramic materials and the filter media further comprises a ceramic fiber material, wherein the ceramic material comprises a metal oxide, carbide, nitride or titanate or composite thereof and wherein the ceramic fiber material comprises silicon carbide, silicon nitride, cordierite, aluminum oxide or alumina silicate or a combination thereof and wherein the sealing glass has a coefficient of thermal expansion that matches the ceramic materials. 
     
     
         3 . The filter assembly as in  claim 2 , wherein the filter assembly is fired at or about 900 degrees Celsius. 
     
     
         4 . The filter assembly as in  claim 1 , wherein the filter assembly is fired at or about 900 degrees Celsius.