Machining / Grinding Zirconia Toughened Alumina Ceramics

CiDRA® Precision Services, LLC has years of experience manufacturing micron level tolerance products from Zirconia Toughened Alumina ceramics. We leverage our in-depth dicing, drilling, milling, grinding, and polishing capability to manufacture the highest quality Zirconia Toughened Alumina products.

Whether you need prototypes or volume production, CiDRA® Precision Services, LLC is here to help. Please contact us to discuss your applications.

About Zirconia Toughened Alumina Ceramics

Zirconia Toughened Alumina (Zr Al2O2), also known as ZTA, is a ceramic matrix composite that uses Zirconia to increase the fracture toughness and strength of Alumina, while still maintaining good hardness and thermal characteristics. It is formed by uniformly dispersing 10% to 20% of Zirconia particles throughout the Alumina bulk material. Though more expensive than Alumina, the cost is justified for some applications.

Zirconia Toughened Alumina Applications

  • Valve seats
  • Pump seats
  • Join implants
  • Cutting tools inserts

Zirconia Toughened Alumina Properties

 

Units

Zirconia Toughened Alumina (ZTA)
Max Use Temperature (No Load) C 1500 - 1650
Thermal Shock (Quenching) C 300 - 325
Thermal Conductivity W/(m K) 15.0 - 27.0
Specific Heat  J/(K kg) 800 - 885
Coefficient of Thermal Expansion 1/C (x10e-6) 8.0 - 8.11
Color White
Moh Hardness 9
Vickers Hardness kg/mm^2 1630 - 1730
Knoop Hardness kg/mm^2 1600 - 2100
Density g/cm^3 4.0 - 4.4
Porosity % of nominal 0
Compressive Strength Mpa 2000 - 2900
Tensile Strength Mpa 290
Flexural Strength MPa 400 -1000
Fracture Toughness MPa m^1/2 4.0 - 12.0
Young's Modulus GPa 310 - 380
Poisson's ratio 0.23 - 0.26
Dielectric Strength kv/cm 85 - 90
Dielectric Constant (@1MHz) 10.6 - 12.5
Dielectric Loss Tangent 0.0005
Resistivity ohm cm >10^13 - >10^16
The information provided in this table is for room temperature only, and is a compilation of publicly available data.  This information is provided for comparison purposes only, and is not intended to be warrantable.   Further, CiDRA® Precision Services, LLC disclaims any and all liability from errors, inaccuracies, or omissions.

 

Please contact us if you would like to discuss your Zirconia Toughned Alumina dicing, drilling, milling, grinding, polishing or any other machining applications.