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Zirconia Toughened Alumina (ZTA)

Zirconia Toughened Alumina Description

ZTA-2Zirconia toughened alumina (ZTA) has mechanical strength and wear resistance and can be used as an ideal material between zirconia particles and alumina. It was established that ZTA ceramic material is stronger and tougher than regular alumina ceramics.

Typically, ZTA contains 10-20% volume of ZrO2 in alumina. Depending on the percentage of content, the properties of the ceramic can be tailored to suit the application in question. Because of the high price of pure zirconia, ZTA with good toughness is a good choice.

Advanced Ceramic Materials is a specialist supplier of zirconia toughened alumina products of highest quality for a wide range of applications.

 Zirconia Toughened Alumina Properties

Chemical Formula Zr-Al2O3
Density 4.1-4.38 g/cm^3
Hardness 1750-2100 Knoop
Elasticity 45-49 x 10^6 psi
Flexure Strength 100-145 ksi
Poisson's Ratio 0.26
Fracture Toughness 5-7 MPa m^1/2
Coefficient of Thermal Expansion 8.0-8.1 x 10^-6 1/C
Thermal Conductivity 20.0-21.0 W/mK
Shock Resistance 325 °C
Maximum Working Temperature 1650 °C


 Zirconia Toughened Alumina Applications:

Where high strength and erosion resistance material is needed, ZTA ceramics can become a first choice. Industrial components such as valves seals, sleeves, pump pistons and spraying nozzles are perfectly suit for ZTA.

Other Applications:

-Probe Bodies
-Fluid Delivery System Components
-Pump Position Sleeves
-Sensor Bulbs
-Analytical instrument Columns


ZTA Products


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