Mixture of molten alumina-zirconia grains

Details Mixture of molten alumina-zirconia grains Mixture of molten alumina-zirconia grains

C - Chemistry, Metallurgy

04

B

C04B 35/109 (2006.01)

Patent

CA 2571810

The mixture of molten alumina-zircon grains has the following chemical composition in percentage by weight to give 100 %: 40-45.5 % ZrO + HfO2; 46-58 % Al2O3; 0-10 % additive; < 0.8 % SiO2 and < 1,2 % impurities. Said mixture is characterised in that the degree of impurity-containing grains is less than 2 % and the nodule concentration measured on the section of any grain of the mixture is greater than 500 nodules per mm2 in at least 50 % of cases.

Mélange de grains d'alumine-zircone fondus présentant l'analyse chimique suivante, en pourcentages en poids et pour un total de 100 %, ZrO + HfO2 : 40 - 45,5 %; Al2O3 : 46 - 58%; Additif: 0 - 10 %, SiO2: < 0,8%; Impuretés : < 1,2 %. Ce mélange est remarquable en ce qu'il présente un taux de grains contenant des inclusions inférieur à 2 % et en ce que la concentration de nodules mesurée sur une section d'un grain quelconque du mélange est, dans au moins 50 % des cas, supérieure à 500 nodules par mm2.

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