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Zirconium Oxide Ceramics
Zirconium Oxide (ZrO2 - also known as zirconia) is a material with very high resistance to crack propagation. Zirconia also has very high thermal expansion and is therefore often the material of choice for joining ceramic and steel. Another outstanding property combination is the very low thermal conductivity and high strength. Zirconium oxide ceramics are used, among other applications, as tools for wire forming, as auxiliaries in welding processes, as insulating rings in thermal processes.
Main Properties of Zirconium Oxide Ceramics
| Item | Unit | Z95 |
| Type | - | Yttria Stabilized |
| Density | g/cm3 | 5.95 |
| Color | - | white |
| Water Absorption | % | 0 |
| Young Modulus | Gpa | 205 |
| Vickers Hardness | Gpa | 12 |
| Compressive Strength | Mpa | 2200 |
| Flexural Strength | Mpa | 900 |
| Thermal Conductivity | W/m.K | 2.20 |
| Thermal Shock Resistance | Δ(°C) | 280 - 350 |
| Max. Working Temp. | °C | 850 |
| Volume Resistivity | Ω ·cm | > 10^12 |
| Dielectric Constant | - | 26 |
| Dielectric Strength | kV/mm | - |
* Tests under room temperature environment;
* The above information is offered for comparison only. Exact
properties will vary depending on the manufacturing method
Typical Applications of Zirconium Oxide Ceramics
- Insulating rings in thermal processes
- Precision shafts and axles in high wear environments
- Wear resistance pads
- Thermocouple protection tubes
- Sandblasting nozzles
- Refractory material
- Extrusion dies
- Bushings and caps
- Fiber optic ferrules and sleeves
- Knives and blades
- Fuel cell parts
- Bearings & rollers
- Welding nozzles & pins
- Laser parts
- Gas igniters
- Electric insulator
- Ceramic guiders
- Oxygen sensors
- Medical and surgical component
- Mechanical seals
