Zirconia ZrO2 Ceramic Grinding Media/yttria stabilized zirconia ceramic ball
Zirconia ZrO2 Ceramic Grinding Media/yttria stabilized zirconia ceramic ball
| / | Unit | 95% Al2O3 | 99% Al2O3 | ZrO2 | GP-Si3N4 |
| Color | / | white | ivory | white | gray |
| Density | g/cm³ | 3.65 | 3.88 | 5.95 | 3.22 |
| Water Absorption | % | 0 | 0 | 0 | 0 |
| Young's Modulus | Gpa | 280 | 350 | 205 | 295 |
| Vickers Hardness | Gpa | 14 | 20 | 12 | 18-20 |
| Flexural Strength ( at R.T. ) | Mpa | 280 | 300 | 900 | 650 |
| Compressive Strength ( at R.T. ) | Mpa | 2000 | 2500 | 2200 | 2200 |
| Thermal Conductivity ( at R.T. ) | W/(m.K) | 18-25 | 30 | 2.2 | 25 |
| Thermal Shock Resistance | ΔT(°C) | 220 | 180-200 | 280-350 | 450-650 |
| Max. Working Temperature ( at R.T. ) | °C | 1500 | 1700 | 850 | 1200 |
| Volume Resistivity ( at R.T. ) | Ω.cm | >10^15 | >10^14 | >10^12 | >10^14 |
| Dielectric Constant (1 MHz at R.T. ) | / | 9.5 | 9.8 | 26 | 8.2 |
| Dielectric Strength | kV/mm | 16 | 22 | / | 16 |
zirconia ceramic ball
Zirconia / ZrO2 / Zirconium Oxide is most famous high-performance material among all oxide ceramics. Ceramic components made out of Zirconia / ZrO2 / Zirconium Oxide generally consist of Zirconia / ZrO2 / Zirconium Oxide as basic material doped with some percentage of other oxides like Yttria (Y2O3) or Magnesia (MgO). Depending on doping material different material properties could be achieved because of influencing the Yttria's microstructure. The "ceramic steel" titled Zirconia / ZrO2 / Zirconium Oxide is doped with Yttria forming an ultra-fine ductile structure with sub-micron grain formation leading to enormous bending strengths. Magnesia doped qualities are less strong also showing a coarser microstructure.
Zirconia / ZrO2 / Zirconium Oxide is characterized through its tribological performance (friction and wear) in moving applications and furthermore:
- High strength
- High fracture toughness
- High hardness
- Wear resistance
- Good frictional behaviour
- Non-magnetic
- Electrical insulation
- Low thermal conductivity
- Corrosion resistance in acids and alkalis
- Modulus of elasticity similar to steel
- Coefficient of thermal expansion similar to iron
STA refractory Co., Ltd. has been committed to the design, development and manufacture of ceramic products since 2003. Our products include alumina ceramic parts, silicon carbide products, graphite parts, zirconia parts, BeO parts, and so on. STA has a factory area of 5000sqm located in Zhengzhou City. Now, it employs more than 200 people. Over 1/4 has rich experience in ceramic manufacture field with over 12 years. After years of efforts and exploration, we have accumulated rich experience in tech ceramic field. We have advanced production and processing equipment and a number of senior developers and skilled technicians.Our products have already passed ISO9001, SGS and RoHS certifications. With stable performance and high-quality, our products have been widely exported to Europe, Asia, America, Africa, and so on. We will try our best to provide our clients with high-quality products. We warmly welcome friends from all walks of life to cooperate with us.
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