Zirconia Toughened Alumina (ZTA)
Zirconia Toughened Alumina Ceramics (referred to as composite ceramics, ZTA) has the characteristics of corrosion resistance and chemical stability. Alumina has high hardness and the toughness of zirconia is good. The composite ceramics have the properties of both materials, it has higher flexural strength and fracture toughness at room temperature, zirconia toughened ceramics have excellent wear resistance, high strength and hardness.
The performance of zirconia toughened alumina ceramics is better than that of 99 alumina ceramics, and the price is much lower than that of zirconia ceramics. The specific ratio of the two materials can be adjusted according to the application. 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.
Edgetetch Industries is a specialist supplier of zirconia toughened alumina products (Available products: ZTA rods, tubes, disc, seal ring, sheet, plate, etc.) of highest quality for a wide range of applications.
Zirconia Toughened Alumina Properties
|Elasticity||45-49 x 10^6 psi|
|Flexure Strength||100-145 ksi|
|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|
Specifications of Zirconia Toughened Alumina
|Bending strength||3-point method||MPa||700|
|Modulus of Elasticity||–||GPa||310|
|Fracture toughness||IF method||MPa∙m1/2||3.5|
|Thermal||Coefficient of thermal expansion||40-400℃||10–6/K||7.1|
|Dielectric loss factor||1MHZ||Tanx10-4||0.2|
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.
-Fluid Delivery System Components
-Pump Position Sleeves
-Analytical instrument Columns
Packing of Zirconia Toughened Alumina Products
Our ZTA products are clearly tagged and labeled externally to ensure efficient identification and quality control. The products are separated by bubble bag 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.