Zirconia Toughened Alumina Ceramic
Edgetech Industries, Advanced Ceramics Division supplies high-quality and competitive price advanced Zirconia Toughened Alumina (ZTA).
Zirconia Toughened Alumina, ZTA Ceramic
Zirconia toughened alumina ceramics (composite ceramics, referred to as ZTA) have the characteristics of high whiteness, corrosion resistance, and good chemical stability. Alumina has high hardness and zirconia has good toughness. The two materials form a composite material with high strength and good toughness, which is more widely used. ZTA ceramics have high flexural strength and fracture toughness at room temperature, so zirconia-toughened ceramics have excellent wear resistance.
ZTA ceramics have better performance than 99 alumina ceramics, but the price is much lower than zirconia ceramics. The specific ratio of the two materials can be adjusted according to the application. Generally, ZTA contains 10-20% volume of ZrO2 in alumina. Depending on the content percentage, the properties of the ceramic can be customized to suit the relevant application.
Edgetech Industries is a professional supplier of zirconia toughened alumina products (current products: ZTA rods, tubes, discs, seals, sheets, plates, etc.), whose products are of the highest quality and suitable for a wide range of applications.
Zirconia Toughened Alumina Properties
| Condition | Unit | ZTA | ||
| Material | — | — | Al2O3/ZrO2 | |
| Color | — | — | White | |
| Density | — | g/cm3 | 4.2 | |
| Surface Roughness | — | μm | 0.2 | |
| Reflectivity | 0.3-0.4mmt | % | 80 | |
| 0.8-1.0mmt | % | 90 | ||
|
Mechanical | Bending strength | 3-point method | MPa | 700 |
| Modulus of Elasticity | – | GPa | 310 | |
| Vickers Hardness | – | Gpa | 15 | |
| Fracture toughness | IF method | MPa∙m1/2 | 3.5 | |
| Thermal | Coefficient of thermal expansion | 40-400℃ | 10–6/K | 7.1 |
| 80-400℃ | 10–6/K | 8 | ||
| Thermal conductivity | 25℃ | W/(m∙K) | 27 | |
| 300℃ | W/(m∙K) | 16 | ||
| Specific heat | 25℃ | J/(Kg∙K) | 720 | |
| Electrical | Dielectric constant | 1mHZ | – | 10.2 |
| Dielectric loss factor | 1MHZ | Tanx10-4 | 0.2 | |
| Volume resistivity | 25℃ | Ω∙cm | >1014 | |
| Breakdown strength | DC | kV/mm | >15 | |
Zirconia Toughened Alumina Applications
Where high-strength and erosion-resistant material is needed, ZTA ceramics can become the first choice. Industrial components such as valve seals, sleeves, pump pistons, and spraying nozzles are perfectly suited for ZTA.
ZTA ceramics are high-strength, high-toughness ceramic composites that can be used in the production of ceramic cutting tools to achieve the processing of cast iron and alloys; used in the production of interface structures of engineering ceramics to extend the service life of engineering materials; used in the production of wear-resistant ceramic balls; relying on the excellent biocompatibility of alumina ceramic materials, they can be made into biomedical materials for the reconstruction and repair of hard tissues of the body (such as teeth).
Packing
Our Zirconia Toughened Alumina products are tagged and labeled externally to ensure efficient identification and quality control. The products are separated by bubble bags for shockproof purposes and finally packed in wooden or carton boxes. Great care is taken to avoid any damage which might be caused during storage or transportation.
Related Products
