Composition ZrO₂ 93% + Y₂O₃ 5% | Vickers hardness 1250 HV1 | porosity 0% | sphericity min. 95%
Summary: 95YSZ (95% yttria-stabilized zirconia beads) is a wet grinding medium balancing density, hardness and wear resistance. A density of 6 g/cc gives impact energy, 1250 HV1 Vickers hardness suits grinding hard materials (lithium battery materials, electronic ceramics), and 0% porosity keeps the ground material from contamination.
Specifications
| Item | Value | Note |
|---|---|---|
| Composition | ZrO₂ 93%, Y₂O₃ 5%, other 2% | Yttrium-stabilized tetragonal structure for fracture toughness |
| Tetragonal phase content | 95% | Higher tetragonal content gives more transformation toughening |
| Density | 6 g/cc | High density provides grinding impact energy |
| Bulk density | 3.7 kg/L | For calculating fill quantity and mill volume |
| Vickers hardness | 1250 HV1 | For grinding materials up to 1000 HV |
| Porosity | 0% | Dense structure, doesn’t absorb ground material, avoids contamination |
| Sphericity | Min. 95% (> 0.85 basis) | High sphericity for even grinding and fewer broken irregular beads |
| Surface | Polished white | Smooth surface reduces wear debris and metal contamination of product |
| Sizes | 0.1–50 mm (on request) | Common size 1.0–1.2 mm / kg; ask about stock for other sizes |
Applications and bead size
| Application | Bead size | Note |
|---|---|---|
| Fine grinding of inks / pigments | 0.3–0.8 mm | Small beads increase contact area for even dispersion of color paste |
| Lithium battery cathode and anode materials (NCM / LFP) | 0.3–1.0 mm | High-density beads give enough impact for hard cathode materials |
| Electronic ceramics (MLCC / PZT) | 0.5–1.2 mm | 0% porosity avoids contaminating ceramic powder with metals other than Zr |
| Magnetic materials / ferrite | 1.0–2.0 mm | Larger beads give strong impact for early coarse grinding |
| Cosmetic / food dispersion | 0.5–1.5 mm | For food contact, check the relevant FDA rules; use a mill suited to the solvent |
| Coatings / dye dispersion | 1.0–3.0 mm | Medium size balances efficiency and wear, for continuous horizontal mills |
Notes for use: zirconia beads are used in sand mills (horizontal / vertical) and ball mill jars. Recommended bead fill is 70–85% of the mill’s effective volume. Before running, check the wear rating of the rotor and chamber materials to avoid metal debris contaminating high-purity materials.
Common questions
What bead size should I use for MLCC ceramic powder? 0.5–1.2 mm is typical; send the material and target particle size so we can suggest a size.
Request a quote
Need a quote or want to confirm specifications? Send the bead size, quantity and the material you grind. For availability, please ask. Request a quote →