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| Parameter | Specification | Remarks |
|---|---|---|
| Material Composition | ZrO₂ ≥95%, Y₂O₃ 3–8 mol% | Yttria-stabilized for structural stability |
| Impurity Content | Fe₂O₃ ≤0.02%, SiO₂ ≤0.03%, Al₂O₃ ≤0.03% | Meets fine chemical purity standards |
| Vickers Hardness (HV) | 1250–1450 | Measured at 25°C, ensuring wear resistance |
| Density (g/cm³) | 6.0–6.1 | Optimized for high-efficiency grinding |
| Wear Rate | ≤0.002%/1000 hours | Tested in horizontal sand mill (2000 rpm) |
| Diameter Range | 0.1 mm – 10 mm | Custom sizes available for specific processes |
| Sphericity | ≤0.005 mm | Ensures uniform grinding and low equipment wear |
| Surface Roughness (Ra) | ≤0.05 μm | Reduces particle adhesion and contamination |
| Operating Temperature Range | -50°C – 800°C | Stable in high-temperature grinding processes |
| Chemical Resistance | Resistant to organic solvents, acids (pH≥2), alkalis (pH≤12); incompatible with HF | Suitable for most fine chemical slurries |
| Max Grinding Fineness | ≤0.1 μm (D50) | Achievable in high-shear sand mills |
Zirconia ceramics display high chemical stability against most dilute and medium-concentration acids and alkalis. However, severe corrosion occurs in high-strength environments, such as hydrochloric acid concentrations exceeding 1:9 or sodium hydroxide solutions above 10% concentration.
Due to their immunity to metal ion contamination, 95% zirconia beads are extensively utilized in grinding and dispersing processes for paints, inks, dyes, pesticides, electronic ceramics, chemical engineering, and machinery.
Zirconia ceramics feature exceptional wear resistance, high density (6.0–6.1 g/cm³), outstanding hardness (1250–1450 HV), high thermal resistance, smooth surface finish (Ra ≤0.05 μm), and electrical insulation properties.
Zirconia ceramics maintain structural integrity and perform reliably across a wide operating temperature spectrum ranging from -50°C to 800°C.
No, zirconia ceramics are incompatible with Hydrofluoric Acid (HF), despite being resistant to organic solvents, acids with pH ≥ 2, and alkalis with pH ≤ 12.
