| abstract |
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabiliser selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabiliser, based on the total zirconia and stabiliser content, being between 2 % and 20 % and the MgO + CaO content being less than 5 % based on the total zirconia and stabiliser content; at least 1 % of a first binder having a glass transition temperature less than or equal to 25 DEG C; 0 - 4 % of an additional binder having a glass transition temperature greater than 25 DEG C; 5 - 50 % alumina; 0 - 2 % of an alumina sintering additive; 0 - 4 % of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9 %; 0 - 6 % of an additional oxide selected from a manganese oxide, ZnO, La2O3, SrO, BaO and mixtures thereof; less than 2 % impurities; and ZrO2 to make up 100%. According to the invention, the total lanthanum oxide content is less than 6 %, the median diameter D50 of the powder is between 80 and 130 [mu]m, the percentile D99.5 is less than 500 [mu]m and the relative density of the granules is between 30% and 60%. |