Thin ceramic articles obtained fusing and casting in a mold a composition of the system al 0-zro -sio -k o which have good mechanical strength and abrasion resistance properties
CA 1333075 C · Owner: Bert, Christophe · Inventors: Urffer, Daniel; Bert, Christophe
Overview
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The invention relates to ceramic articles. It relates to an article made of ceramic material shaped by fusing and casting in a mold a composition 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, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 2011.
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