| 摘要 |
<p>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°C; 0 - 4 % of an additional binder having a glass transition temperature greater than 25°C; 5 - 50 % alumina; 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 %; less than 2 % impurities; and ZrO2 to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 µm, the percentile D99.5 is less than 500 µm and the relative density of the granules is between 30% and 60%.</p> |
