| abstract |
A sintered particle has the following chemical analysis, as percentages by weight: ZrO 2 partially stabilized with CeO 2 and Y 2 O 3 : complement to 100%; Al 2 10%-60%; additive selected from CaO, a manganese oxide, La 2 O 3 , SrO, BaO, and mixtures thereof: 0.2%-6; the quantity of CaO being less than 2%; impurities: <2%; the zirconia being stabilized with CeO 2 and Y 2 O 3 present in quantities such that, as molar percentages based on the sum of ZrO 2 , CeO 2 and Y 2 O 3 : CeO 2 : 6 mol %-11 mol %; and Y 2 O 3 : 0.5 mol %-2 mol %; the particle being obtained by sintering at a sintering temperature higher than 1300° C., the sintering temperature being higher than 1400° C. if the additive is CaO or if the molar CeO 2 content is in the range 10% to 11%. |