| abstract |
The invention relates to a particulate powder, more than 95% by number of the particles having a circularity greater than or equal to 0.85, the powder comprising, In mass percent on an oxide basis, more than 98% of a stabilized oxide selected from stabilized zirconium oxides, stabilized hafnium oxides and mixtures thereof, the stabilized oxide being stabilized by a stabilizing agent selected from oxides of Y, Ca, Ce, Sc, Mg, In, La, Gd, Nd, Sm, Dy, Er, Yb, Eu, Pr and Ta, and mixtures of these stabilizing oxides, and the powder having: median particle diameter D of less than 15 μm 50 90% D of the particle diameter of less than 30 μm 90 And a size dispersion index (D) of less than 2 90 ‑D 10 )/D 10 (ii) a -a relative density greater than 90%. |