Thin ceramic articles obtained fusing and casting in a mold...

Details Thin ceramic articles obtained fusing and casting in a mold... Thin ceramic articles obtained fusing and casting in a mold...

C - Chemistry, Metallurgy

04

B

261/28

C04B 35/48 (2006.01) C04B 35/10 (2006.01) C04B 35/484 (2006.01)

Patent

CA 1333075

The invention relates to ceramic articles. It relates to an article made of ceramic material shaped by fusing and casting in a mold a com- position based on alumina, zirconia, silica and an alkali metal oxide, the said article having, in at least one of its parts, a thickness lower than or equal to 30 mm and being intended for an application where mechanical strength and/or abrasion resistance are of primary importance, characterized in that it has the following chemical composition, in % by weight based on the oxides: Al2O3 : 40 - 75 ZrO2 : 20 - 45 SiO2 : 5 - 20 Na2O : 0 - 2.7 K2O : 0.15 - 4.25 Fe2O3+TiO2+CaO+MgO : 0 - 2, with the conditions that (i) each of Fe2O3, TiO2, CaO and MgO does not exceed 0.7% by weight, and (ii) that the weight ratio Na2O + K2O/1.52 SiO2 is between 0.07 and 0.14 inclusive. Application as micronizer disc, pump wear com- ponent and antiabrasion slab.

590941

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