Use of Ceramic Microfibers to Generate a High Porosity Cross‐Linked Microstructure in Extruded Honeycombs

The Relationship Between Microstructure and Fracture Toughness for Fibrous Materials for Diesel Particulate Filters

“…implies that design of a high thermal shock resistant material would require a high strength (or fracture toughness) material but with low elastic modulus. Indeed, the higher level of overall porosity in fibrous substrates has been shown to keep the elastic moduli of these materials at comparable or lower values compared with their porous monolithic counterparts 10 …”

“…The pressure drop performance and filtration efficiency is related to total porosity, pore shape and size distribution and microstructure. It has been shown that the crosslinked microstructure of fibrous substrates helps increase their filtration efficiency with lower pressure drop compared with porous monolithic substrates 10 . Liu et al 10 attributed the improved filtration performance to the pore size distribution and higher degree of connectivity in the fibrous microstructure.…”

“…and 0.305 mm cell wall thickness. A detailed description of the processes and materials for the fabrication of these materials can be found elsewhere 9,10 . The phases present in these materials, as determined by X‐ray diffraction, are listed in Table I.…”

“…In this paper we report on the fracture behavior of two new, highly porous, fibrous ceramic materials with a unique Cross‐Linked Microstructure (CLM ™ ) 9,10 and compare the properties of these materials with those of porous monolithic ceramic materials that are currently being used to manufacture DPFs.…”