Method and apparatus for an extruded ceramic biosoluble fiber substrate
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United States of America Patent
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Jul 28, 2009
Grant Date -
Nov 20, 2008
app pub date -
May 14, 2007
filing date -
May 14, 2007
priority date (Note) -
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Abstract
A porous ceramic substrate is disclosed that is fabricated from biosoluble ceramic fibers. Porosity and permeability of the substrate is provided by intertangled biosoluble fibers, that can be formed into a honeycomb form substrate through an extrusion process. The fibrous structure is formed from mixing biosoluble fibers with additives that include a bonding agent, and a fluid to provide an extrudable mixture. The structure is sintered at a temperature that exceeds the glass formation temperature of the bonding agent, but less than the maximum operational limits of the biosoluble fiber, to form a structure that has sufficient strength and porosity to provide for filtration and/or as a catalytic host.
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