High strength porcelain and method therefor

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 33/24 (2006.01) C03C 10/00 (2006.01) C04B 35/18 (2006.01)

Patent

CA 2198585

A porcelain having 9 to 55% by weight of SiO2, 36 to 87 % by weight A12O3, 0 to 2.0 % by weight of Fe2O3, 0 to 1.0 % by weight of TiO2, 0 to 0.5 % by weight of CaO, 0 to 0.5 % by weight of MgO, 1.0 to 4.0 % by weight of K2O and Na2O combined, and 0.25 % to 25.0 % by weight of bismuth oxide is disclosed. The porcelain has unexpectedly high unglazed bending strength and may be used for dielectric and structural applications.

Porcelaine constituée de 9 à 55 % en poids de SiO2, 36 à 87 % en poids d'Al2O3, 0 à 2,0 % en poids de Fe2O3, 0 à 1,0 % en poids de TiO2, 0 à 0,5 % en poids de CaO, 0 à 0,5 % en poids de MgO, 1,0 à 4,0 % en poids de K2O et Na2O combinés, et 0,25 à 25,0 % en poids d'oxyde de bismuth. Cette porcelaine présente des caractéristiques de résistance à la flexion étonnamment élevée lorsqu'elle n'est pas vitrifiée et peut être utilisée pour des applications diélectriques et structurales.

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