English
Zirconia Toughened Alumina (ZTA) is an advanced composite ceramic combining an alumina matrix with zirconia reinforcement. It delivers high mechanical strength, improved fracture toughness, excellent hardness and reliable wear resistance for demanding industrial applications.
Zirconia Toughened Alumina, commonly known as ZTA, is an advanced ceramic composite made from aluminum oxide (Al₂O₃) and zirconium oxide (ZrO₂). The material combines the hardness and stiffness of alumina with the toughening contribution of zirconia.
With a reported bending strength of 600 MPa and fracture toughness of 7.5 MPa·m¹ᐟ², ZTA offers a combination of mechanical properties suited to ceramic components exposed to demanding loads and abrasive conditions.
Its high compressive strength, dimensional stability and resistance to thermal shock make it a valuable material option for precision-engineered industrial components.
ZTA combines the hardness of alumina with zirconia-based toughening, making it suitable for components that require strength, toughness and resistance to mechanical damage.
A bending strength of 600 MPa and compressive strength of 3,600 MPa provide strong mechanical support for load-bearing ceramic components.
The zirconia-containing composite structure contributes to crack resistance, with a reported fracture toughness value of 7.5 MPa·m¹ᐟ².
A thermal shock resistance value of 320°C supports applications involving temperature changes and thermal stress.
With volume resistance exceeding 10¹³ Ω·cm at 20°C, ZTA provides electrical resistance for suitable insulating applications.
High Vickers hardness of 1,600 HV 0.5 helps resist surface abrasion and mechanical wear in industrial service.
An elastic modulus of 350 GPa and a dense ceramic structure support dimensional stability in precision components.
ZTA offers a balanced combination of strength, hardness and toughness. Its composite composition makes it an alternative for applications where conventional alumina may require improved mechanical performance.
Designed for ceramic parts exposed to substantial mechanical loads and compressive forces.
The alumina-zirconia composite offers improved resistance to fracture compared with conventional alumina-based ceramic materials.
Stable thermal characteristics make ZTA suitable for selected industrial environments involving heat and temperature fluctuations.
ZTA can be manufactured into customized ceramic components according to application requirements, technical drawings and dimensional specifications.
High-strength ZTA components for mechanical structures and industrial equipment requiring reliable load-bearing performance.
Learn More →
Precision ceramic sealing components designed for applications involving mechanical contact and demanding service conditions.
Learn More →
Engineered ceramic tube components available for customized dimensions and selected industrial operating environments.
Learn More →
Custom-engineered ZTA ceramic parts produced to meet specific geometries, dimensions and technical drawing requirements.
Learn More →Typical mechanical, thermal and electrical properties of Zirconia Toughened Alumina (ZTA), based on the VANCERA material specification.
| Properties | Unit | ZTA (Al₂O₃ + ZrO₂) |
|---|---|---|
| Colour | - | White |
| Density | g/cm³ | 4.1 |
| Bending Strength | MPa | 600 |
| Compressive Strength | MPa | 3,600 |
| Elastic Modulus | GPa | 350 |
| Fracture Toughness* | MPa·m¹ᐟ² | 7.5 |
| Weibull Coefficient | m | 15 |
| Vickers Hardness | HV 0.5 | 1,600 |
| Thermal Expansion Coefficient | 10⁻⁶ K⁻¹ | 6.0–8.6 |
| Thermal Conductivity | W/mK | 18 |
| Thermal Shock Resistance | ΔT °C | 320 |
| Maximum Working Temperature | °C | 1,000 |
| Properties | Unit | ZTA (Al₂O₃ + ZrO₂) |
|---|---|---|
| Volume Resistance at 20°C | Ω·cm | >10¹³ |
| Dielectric Strength | kV/mm | Not specified |
| Dielectric Constant | εr | Not specified |
| Dielectric Loss Angle at 1 MHz | tanδ | Not specified |
Note: The values above are based on the material specifications published by VANCERA. The original source identifies the toughness property as "Shock Strength" and gives a value of 7.5 MPa·m¹ᐟ²; it is presented here as fracture toughness for reference. Electrical values not provided in the source are marked as not specified. Actual properties may vary depending on manufacturing processes, component geometry and testing conditions. Please confirm the relevant specifications before engineering use.
With its combination of high strength, fracture toughness and hardness, ZTA is a suitable material candidate for industrial components exposed to mechanical loads, friction and demanding operating conditions.
Manufacturing ZTA components involves controlled material preparation, ceramic forming, sintering and finishing processes to achieve the required component specifications.
Selection and preparation of alumina and zirconia raw materials.
Shaping the ceramic mixture through suitable forming methods.
Controlled high-temperature processing to develop the ceramic structure.
Grinding and finishing to achieve specified dimensions and surface requirements.
Verification of component dimensions and relevant material properties.
We support customized ZTA ceramic component projects, from material selection and engineering evaluation to precision manufacturing based on customer specifications.
ZTA material solutions for applications requiring high strength, hardness and improved fracture toughness.
Customized ceramic component geometries and dimensions based on customer drawings and technical requirements.
Ceramic grinding and finishing processes to meet specified dimensional and surface requirements.
Dimensional and material inspections to support consistency and compliance with project specifications.
Find out more about Zirconia Toughened Alumina, its material characteristics and engineering applications.
