Zirconia Toughened Alumina (ZTA)

Zirconia Toughened Alumina (ZTA)

ZTA is often used in wear applications as an intermediate solution between alumina and zirconia. It offers an increased fracture toughness over alumina with a material cost less than that of zirconia.

ZTA (Zirconia Toughened Alumina) is used in mechanical applications. It is considerably higher in strength and toughness than Alumina. This is a result of the stress-induced transformation toughening achieved by incorporating fine Zirconia particles uniformly throughout the Alumina. Typical Zirconia content is between 10% and 20%. As a result, ZTA is more expensive than Alumina but offers increased component life and performance.


  • Excellent strength
  • Excellent toughness
  • Excellent wear resistance
  • High temperature stability
  • Corrosion resistance


  • Pump components
  • Bearings
  • Joint implants
  • Bushings
  • Cutting tool inserts
  • Valve seats
  • Wear components
  • Biocompatible devices

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