HIGH POROSITY CERAMIC HONEYCOMB ARTICLE CONTAINING RARE EARTH OXIDE AND METHOD OF MANUFACTURING SAME

The present invention describes a high porosity (%P = 45%), refractory, ceramic article comprising a cordierite ceramic phase and at least about 0.1 wt.% of a rare earth oxide, such as yttrium oxide or lanthanum oxide. When compared to typical high-porosity cordierite articles, the articles of the p...

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Bibliographic Details
Main Authors BROCHETON, YVES, A, BEALL, DOUGLAS, M, MERKEL, GREGORY, A
Format Patent
LanguageEnglish
French
Published 08.01.2009
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The present invention describes a high porosity (%P = 45%), refractory, ceramic article comprising a cordierite ceramic phase and at least about 0.1 wt.% of a rare earth oxide, such as yttrium oxide or lanthanum oxide. When compared to typical high-porosity cordierite articles, the articles of the present invention may exhibit relatively high strength, relatively low microcracking, relatively high strain tolerance (MOR/E), and/or relatively high thermal shock resistance (TSP). La présente invention porte sur un article de haute porosité (%P = 40 %), réfractaire, céramique, comprenant une phase céramique de cordiérite et au moins environ 0,1 % en poids d'un oxyde de terre rare, tel que l'oxyde d'yttrium ou l'oxyde de lanthane. Lors de la comparaison avec des articles de cordiérite de haute porosité typiques, les articles de la présente invention peuvent manifester une résistance relativement élevée, une microfissuration relativement faible, une tolérance aux contraintes relativement élevée (MOR/E) et/ou une résistance au choc thermique relativement élevée (TSP).
Bibliography:Application Number: WO2008US07940