Zirconia Toughened Alumina

ZTA - Aluminum Zirconium

Zirconia toughened alumina is a composite of alumina and zirconia which leads to an increase in strength and fracture toughness as compared to other aluminas.

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Increased Fracture Toughness

The high fracture toughness gives it very good edge strength and makes the material ideal for components subjected to impact loading.

Excellent Wear Resistance

During the sintering process, an extremely smooth microstructure is achieved which leads to superior wear performance.

Good Thermal Conductivity

ZTA materials provide for good dissipation of heat generated by friction.

Zirconia Toughened Alumina Ceramic Properties

Physical PropertyUnitsTypical Value
Grain Sizeμm6
Hardness (Vickers)GPa14.5
Fracture ToughnessMPam^1/26
Flexural StrengthMPa586
Tensile StrengthMPa344
Compressive StrengthMPa2758
Elastic ModulusGPa338
Poisson's Ratio-0.23
Coefficient of Thermal Expansion1 x 10-6 in/in °C6.0
Volume ResistivityΩ-cm10^14

All properties are at room temperature (20°C) unless otherwise stated.

ZTA Wear Tiles

Zirconia Toughened Alumina (ZTA) Wear Tiles


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