Zirconium oxide (ZrO2)

Zirconium oxide is characterized by a particularly high toughness thanks to its reinforcing mechanism. This is due to the meta-stable phase, which can transform into a stable phase under stress. This results in an increase in volume so that cracking is prevented. The flexural strength and fracture toughness of the material is therefore higher than that of aluminum oxide.
It is an ideal material for a metal-ceramic hybrid component, as the modulus of elasticity and thermal expansion are similar to steel. As a result, little internal stress occurs at the interfaces during mechanical loading or temperature changes. Due to the low thermal conductivity of only 2 W/mK, ZrO
2 It is ideal for heat-insulating applications and also has a low coefficient of friction, which has a positive effect on the sliding properties. Like other ceramics, it is non-magnetic and electrically neutral.
Possible applications include wire forming technology, welding systems, positioning and centering pins, as well as your individual component with its special application.
The material contains 3 mol-% yttrium oxide to optimize the reinforcement effect.

Material data sheet

Designations: ZrO2zirconium oxide, zirconium oxide
SizeUnitTypical value
ZrO2 Salary1 %97
Densityg / cm36,06
Strength, 4-point bending test2MPa600 - 1000
E-modulusGPa200
Vickers hardness HVGPa12 - 13
Thermal conductivityW / m K2 - 3
Coefficient of thermal expansionppm / K7 - 13
1contains 3 mol -% yittrium oxide
2Material strength data are statistical values. Please contact us to obtain the desired parameters.

Design features

FeatureUnitValue
Component dimensions, max.mm67 x 38 x 77
Wall thicknessmm1 - 5
Diameter of holes and channels, min.1mm1
1Smaller drill holes possible through reworking