Zirconia
Zirconia Overview
Zirconias have a unique crystal structure which combines extreme strength, high fracture toughness, and excellent wear resistance. CoorsTek has engineered transformation toughened formulations with zirconia crystal structures which expand when a micro-crack is formed — preventing further crack growth and arresting brittle failure.
CoorsTek zirconias, including our high-performance Technox® zirconia brand, are ideal for extreme mechanical environments, particularly impact prone applications. Certain zirconia compositions provide enhanced fatigue loading resistance.
- Toughness
- Mechanical Strength
- High Heat Resistance
- Corrosion Resistance
Magnesia Partially Stabilized Zirconia
Magnesia Partially Stabilized Zirconia is a very tough ceramic used in severe-service applications. A combination of corrosion resistance, durability, and toughness make it ideal for machinery parts and valves in severe applications. CoorsTek Dura-Z™ is a uniquely formulated composition designed to maintain the outstanding mechanical performance under extreme environments.
Yttria Partially Stabilized Zirconia
Yttria Partially Stabilized Zirconia (YTZP) components are very strong and can be employed in extreme environments. This material excels in machinery and mechanical applications requiring corrosion and insulative properties matched with fatigue resistance and impact loading excellence. Additionally, unique mechanical properties allow for an exceptional surface finish on the sub-micron scale.
Fully Stabilized Zirconia
Fully Stabilized Zirconia is applied in high-temperature applications that require strong thermal shock resistance, fracture toughness, and superior corrosion resistance. Additionally, Fully Stabilized Zirconia has the unique capability to allow oxygen ion transporting, meaning only oxygen ions can pass through its structure. This allows it to be used in applications like active membranes.
Ceramic Expertise
CoorsTek helped pioneer technical applications for zirconia and continues to formulate many different zirconias, optimized for a range of application-specific requirements. Our ceramics experts help you select the best material for your application.
Brochure Downloads
Download the Zirconia Materials Brochure
| MgO Partially Stabilized Zirconia |
Sintered Y2O3 Partially Stabilized Zirconia | Sintered Y2O3 Partially Stabilized Zirconia | HIPped Y2O3 Yttria Tetragonal Zirconia Polycrystal |
HIPped Y2O3 Yttria Tetragonal Zirconia Polycrystal |
HIPped Y2O3 Yttria Tetragonal Zirconia Polycrystal |
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| Properties | Units | Dura-Z™ | YTZP | Technox® 2000 | YTZP | YZ-110 HS | Technox® 3000 |
| Density | g/cm³ | 5.72 | 6.02 | 6.02 | 6.07 | 6.07 | 6.07 |
| Color | — | WHITE | WHITE | WHITE | GRAY | OLIVE-BROWN | OLIVE |
|
4-PT Flexural Strength |
MPa (psi x 10³) |
620 | 1240 | 1000 | 1720 | 1500 | 1400 |
| Elastic Modulus (20° C) |
GPa (psi x 106) |
200 | 210 | 210 | 210 | 210 | 210 |
| Compressive Strength (20° C) |
MPa (psi x 10³) |
1750 | 2500 | 2000 | 2500 | 2300 | 2000 |
| Hardness (Knoop 1000gm) |
GPa (kg/mm²) |
1200 | 1300 | 1300 | 1300 | 1300 | 1300 |
| Fracture Toughness (KIC) |
MPa m1/2 | 11.0 | 13.0 | 10.0 | 13.0 | 8.5 | 10.0 |
| Thermal Conductivity (20° C) |
W/m | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 |
| Coefficient of Thermal Expansion (25-1000°C) | 1x10-6/°C | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 |
| Dielectric Constant (1 MHz) |
25° C | 28 | 29 | - | 29 | - | - |
| Dielectric Loss (tan delta) (1 MHz 25° C) |
25° C | .001 | .001 | - | .001 | - | - |
| Volume Resistivity (25° C) |
ohm-cm | >1013 | >1013 | >1013 | >1013 | >1013 | >1013 |