HONEYCOMB FILTER AND PRODUCTION METHOD FOR HONEYCOMB FILTER

A honeycomb filter of the present invention includes a ceramic honeycomb substrate including a porous honeycomb fired body having a large number of cells placed longitudinally in parallel with one another with a cell wall interposed therebetween, each of the cells passing fluid therethrough and bein...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KASUGA, TAKAFUMI, JINBO, NAOYUKI, NAKAMURA, KAZUKI, MAKINO, MISAKO, MD, SAIDUZZAMAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING LIME, MAGNESIA MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG STEAM ENGINES TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	A honeycomb filter of the present invention includes a ceramic honeycomb substrate including a porous honeycomb fired body having a large number of cells placed longitudinally in parallel with one another with a cell wall interposed therebetween, each of the cells passing fluid therethrough and being sealed at either a fluid inlet end or a fluid outlet end of the cell; and an auxiliary filter layer including at least two layers, the auxiliary filter layer being formed on a surface of the cell wall of the cell opened at the fluid inlet end and sealed at the fluid outlet end, and on a pore portion in the cell wall. The auxiliary filter layer includes a first layer in which particles having a first average particle diameter are deposited on the surface of said cell wall, and a second layer in which particles having a smaller second average particle diameter than said first average particle diameter are deposited on a surface of said first layer.