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Zirconia (Ceramic) Parts

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.

Product Features:

• Low thermal conductivity
• High density
• Chemical inertness
• Resistance to molten metals
• Wear resistance
• High fracture toughness

Product Parameters:

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
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 and After-Sales Service:

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.

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