CRACK-RESISTANT CERAMIC HONEYCOMB ARTICLES AND METHODS OF MANUFACTURING SAME

The present invention provides honeycomb ceramic articles and methods of manufacturing such articles having few or no defects in the outer skin. Methods for minimizing and/or eliminating cracks in thin-wall and ultra-thin-wall cordierite honeycomb articles are disclosed. Advantageously, the present...

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Bibliographische Detailangaben
Hauptverfasser:	MALARKEY, CHRISTOPHER J, PEANASKY, JOHN S, HE, LIN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY 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 THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides honeycomb ceramic articles and methods of manufacturing such articles having few or no defects in the outer skin. Methods for minimizing and/or eliminating cracks in thin-wall and ultra-thin-wall cordierite honeycomb articles are disclosed. Advantageously, the present invention prevents skin cracks from forming during the production of thin-wall and ultra-thin- wall cordierite honeycomb articles by optimizing skin properties such as porosity, thickness and pore size distribution. La présente invention concerne des articles céramiques en nid d'abeilles et des procédés de fabrication de tels articles présentant peu voire pas de défauts dans la couche de peau. L'invention concerne également des procédés permettant de minimiser et/ou d'éliminer les fissures dans des articles en nid d'abeilles à base de cordiérite à paroi fine et ultrafine. Avantageusement, la présente invention empêche la formation de fissures dans la couche de peau lors de la fabrication d'articles en nid d'abeilles à base de cordiérite à paroi fine et ultrafine en optimisant les propriétés de la peau telles que la porosité, l'épaisseur et la distribution de la taille des pores.