| Product Name: | Ysz Zirconia Grinding Balls |
|---|---|
| Material: | Zirconia Zro2 |
| Size: | 0.1--50mm |
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Zirconia grinding balls are ultra-high-density, wear-resistant spheres engineered from 95-97% zirconium oxide (ZrO2) stabilized with 3-5% yttria (Y2O3). Designed for high-impact, high-efficiency size reduction in abrasive and corrosive environments, they outperform traditional media with exceptional:
*Toughness: Highest fracture toughness (≥8 MPa·m¹/²) among ceramics
*Density: Near-steel density (6.0 g/cm³) for rapid particle size reduction
*Zero Contamination: Chemically inert, ideal for sensitive materials
*Wear Resistance: 10× longer lifespan than alumina balls in harsh milling
| Parameter | Specification Range |
|---|---|
| Composition | ZrO2: 94.5-95.5%, Y2O3: 4.5-5.5% |
| Density | 5.90-6.05 g/cm³ |
| Hardness (Vickers) | 1,200-1,350 HV |
| Fracture Toughness | ≥8.0 MPa·m¹/² |
| Wear Rate | ≤0.005% (per 100 hrs, silica slurry) |
| Size Range | Ø0.1-50 mm (Common: 0.5/1/3/5/10/20 mm) |
| Size Tolerance | ±0.1-0.2 mm (Grade 5 precision) |
| Roundness/Sphericity | >99% |
| Surface Roughness (Ra) | ≤0.05 µm (Mirror-polished) |
| Crystal Phase | >95% Tetragonal (Y2O3-stabilized) |
| Crush Resistance | ≥150 kN/ball (Ø10 mm) |
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Acid/Alkali Resistance: Stable in conc. HCl, H2SO4 (pH 0-14, 100°C).
Thermal Shock Resistance: Withstands ΔT >500°C cycles.
Operating Temperature: -196°C to +800°C (long-term).
Leachables: Zr²+ leaching <0.1 ppm (FDA-compliant for pharma).
Key Applications in Chemical Industry:
*Advanced Ceramics: Grinding zirconia, silicon nitride, alumina powders
*Battery Materials: Nano-grinding of NMC/LFP cathodes, solid electrolytes
*Pharmaceuticals: Contamination-free milling of APIs & excipients
*Pigments & Dyes: Dispersion of TiO2, organic colorants
*Minerals: Ultrafine grinding of quartz, talc, rare earth oxides
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