Yttria-Stabilized Zirconia (YSZ) Grinding Balls:
Material Composition:
- ZrO₂ stabilized with 3–8 mol% Y₂O₃ (typically 3YSZ, 5YSZ, or 8YSZ), forming a tetragonal/cubic phase structure for enhanced toughness and wear resistance.
Key Properties:
1. Ultra-High Wear Resistance:
- Extremely low wear loss (<0.01%/hr in ball milling), outperforming alumina and silica-based media.
- Mohs hardness: ~8.5; Vickers hardness: 1,200–1,400 HV.
- 6–8 MPa·m¹/² (due to phase transformation toughening), preventing chipping or cracking.
3. Chemical Inertness:
- Resistant to acids, alkalis, and organic solvents (except HF and hot concentrated H₂SO₄).
- Density: ~6.0 g/cm³(higher than Al₂O₃), improving grinding efficiency.
- Compressive strength: >2,000 MPa.
- Operating range: up to 800°C (1,472°F); low thermal conductivity.
Applications:
- Precision Grinding:
- Ideal for planetary mills, attritors, and vibratory mills in ceramics, pigments, pharmaceuticals, and battery materials (e.g., Li-ion cathode powders).
- Wear-Resistant Components:
- Valves, pump seals, and bearing balls in corrosive environments.
- Sizes: 0.1mm–50mm (common: 1mm, 3mm, 5mm, 10mm).
- Surface Finish ≤0.05 µm Ra (mirror-polished options available).
- **Roundness: ≤0.01mm (high-sphericity grade).
- 10–20x longer lifespan than alumina balls in fine grinding.
- Zero contamination (non-porous, chemically inert).
For specific grades (e.g., 3YSZ for high toughnessvs. 8YSZ for high-temperature stability), let me know your application details!
