Zirconia ceramic parts are made of Y-TZP or Mg-PSZ materials. Y-TZP (Yttria Stabilized Zirconium Oxide) is a specialty material for critical structural ceramic applications. The material is almost completely tetragonal in structure and is partially stabilized using about 3 mol% of Yttria (Y2O3).
This material has the highest flexural strength of the zirconia materials particularly when processed using a HIP (Hot Isostat Press). The excellent mechanical properties of this material are a result of a very small grain size, extremely low porosity, and a good deal of transformation toughening.
The Y-TZP material’s extremely fine grain size makes it ideal for creating sharp blades that will, because of its excellent wear resistance, remain razor sharp. It is used in tooling and process applications for its strength, superior toughness, and excellent abrasion resistant.
Mg-PSZ(Magnesium oxide)is used as the stabiliser. This cubic phase material is loaded with tiny tetragonal phase precipitates, giving a very high level of transformation toughness. Mg-PSZ is able to give the highest level of fracture toughness.
Zirconia ceramic parts have excellent mechanical properties, including high strength, fracture toughness, wear resistance, good thermal shock and low thermal conductivity.
Due to these characteristics it finds use in high wear and corrosion applications including valves, pumps and liners. It is the material of choice for the chemical processing and petrochemical industries.
• Low thermal conductivity
• High density
• Chemical inertness
• Resistance to molten metals
• Wear resistance
• High fracture toughness
| Dimensional accuracy | Up to 0.01mm |
| Smoothness | Highest possible mirror |
| Concentricity | Up to 0.01mm |
| Parallelism | Up to 0.01mm |
| The inner hole tolerance | The minimum 0.01mm |
| Straight flute | The narrowest 0.1x100mm |
| The thickness of the size | Minimum to 0.2mm |
| The screw thread | Minimum internal thread M2 |
| Cylindricity | Up to 0.01mm |
| The linear tolerance | Up to 0.01mm |
| The smallest aperture | The minimum 0.07mm |
| Precision process | CNC maching,grinding,lapping |
| Surface finish | Glazed,polishing or metallized |
| Visual quality: 1. No cracks, no dark dots, no contamination and sharp edges; 2. Evenly distributed glaze with very smooth surface |
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| Characteristics | Item | Zirconia-toughened Alumina | MgO partially Stabilized Zirconia | 3% mol Y2O3 Stabilized Zirconia | Unit |
| Mechanical Characteristics | Colour | White | Yellow | White/Ivory | |
| Density | 4.1 | 5.72 | 6.02 | g/cm3 | |
| Bending Strength | 550 | 500 | 1200 | MPa | |
| Compressive Strength | 2900 | 2500 | 3000 | MPa | |
| Elastic Modulus | 360 | 250 | 210 | GPa | |
| Fracture Toughness | 5~6 | 8 | 13 | MPam1/2 | |
| Vickers Hardness | 1600 | 1100 | 1300 | HV0.5 | |
| Thermal Characteristics | Coefficient of Line Thermal Expansion | 8.3 | 10.2 | 10.3 | 10-6K-1 |
| Thermal Conductivity | 27 | 3 | 2.2 | W/mK | |
| Thermal Shock Resistance
(Put in Water) |
300 | 450 | 300 | ∆T℃ | |
| Max Working Temperature | 1500 | 2100 | 1000 | ℃ | |
| Electrical Characteristics | Volume Resistance at 20℃ | >1014 | >1013 | >1013 | Ωcm |
| Dielectric Strength | 9×106 | 13×105 | 11×106 | V/m | |
| Dielectric Constant | 10.6 | 28 | 33 | εr | |
| One MHZ Dielectric
Loss Angle at 20℃ |
0.0005 | 0.0017 | 0.0016 | tanᵟ |
Application:
• Precision ball valve balls and seats
• Deep well down-hole valves and seats
• Rollers and guides for metal tube forming
• Hot metal extrusion dies
• Marine pump seals and shaft guides
• Oxygen sensors
• Fuel cell membranes Ballistic armor
Our zirconia ceramic parts/components are exported to USA, Canada, Europe, and South America and Southeast Asia.
After-sales service:
Accept any repair of the product, help to improve technology for customer. And also provide long-term technical help and support for you.
