| 摘要 |
The invention relates to fused ceramic beads, which have the following chemical composition in % by weight on the basis of the oxides: 40 to 95% of ZrO2 and HfO2; at least one of Y2O3 and CeO2, with the provisos that Y2O3, when present, represents 0.1 to 10% and CeO2, when present, represents 1 to 25%, the total of Y2O3 and CeO2 representing 0.1 to 25%; a quantity of SiO2 representing 10 to 45% of the composition when CeO2 is absent from the composition and 0.5 to 45% when CeO2 is present in the composition. Application to grinding and to dispersion in wet medium is provided.
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