Zirconia toughened alumina is a high toughness alumina ceramic produced by adding 10% -20% zirconia to the alumina powder and firing it. It is manufactured using stress induced transformation of tetragonal zirconia particles. ZTA has higher mechanical strength and wear resistance than ordinary alumina, as well as good high-temperature stability and biocompatibility, making it the perfect choice for pump valve components, seals, and joint implants.
Application of zirconia toughened alumina
Q:
Alumina toughened zirconia ceramics exhibit excellent mechanical properties.
Its hardness is higher than traditional ceramic materials, and even close to the hardness of diamond.
At the same time, its bending strength and compressive strength are also very high, and it has excellent wear resistance performance.
These properties enable alumina toughened zirconia ceramics to perform excellently under high load and high friction conditions, making them suitable for various industrial applications.
Good corrosion resistance and biocompatibility:
Alumina toughened zirconia ceramics have good resistance to chemical corrosion and high chemical stability.
In addition, it also has good biocompatibility and does not cause significant irritation or side effects on human tissues, making it widely used in the medical field, such as artificial joints, dental implants, etc.
High temperature stability:
Alumina toughened zirconia ceramics can still maintain good mechanical properties and stability at high temperatures
What is zirconia toughened alumina
Q:
Zirconia toughened alumina (ZTA) ceramic is an advanced ceramic material composed of alumina and zirconia
This material combines the high strength and hardness of alumina with the toughness of zirconia, giving it high mechanical strength, fracture toughness, and thermal stability. When ZTA ceramics are subjected to impact, tiny zirconia particles will transform into stress absorbing microcracks, thereby preventing catastrophic failures and improving fracture toughness. The production process of ZTA ceramics usually includes steps such as the preparation of ceramic powder, pressing of raw materials, and sintering and processing
Performance of zirconia toughened alumina
Q:
Chemical formula Zr Al2O3
Density 4.1-4.38 g/cm ^ 3
Hardness 1750-2100 Nupu
Elastic 45-49 x 10 ^ 6 pounds per square inch
Bending strength 100-145 grams west
Poisson's ratio 0.26
Fracture toughness 5-7 MPa m ^ 1/2
Thermal expansion coefficient 8.0-8.1 x 10 ^ -6 1/C
Thermal conductivity 20.0-21.0 watts/meter
Impact resistance 325 degrees Celsius
Maximum working temperature 1650 degrees Celsius
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