Cerafast

Project Booster
french
Anglais
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Zirconia

Example of applications

Stabilized zirconia in tetragonal polymorph is obtained by substitution of some Zr4+ ions with Y3+ ions. This stabilization gives PZT zirconia hardness, chemical inertness, thermal resistance, corrosion resistance, wearout resistance…
Applications :  cutting tool, nozzle, thermal barrier, tooth, sleeve for fiber optic connector, ball and seat fot high pressure valve, shaft and bearing for micro-pump, shaft and bearing for sensor, wire guide…


This kind of zirconia is also available in many colors typically used for jewels and watches

 


Typical characterictics

 unitNaturalColored
Densityg/cm6.056.05
Cristal sizeμm0.420.47
 unitNaturalColored
ZrO2 + HfO2 + Y2O3%> 99> 98.5
Y2O3%4.5-5.44.5-5.4
Al2O3%< 0.5< 0.5
HfO2%< 5< 5
Others oxides%< 0.5< 1.5
 unitNaturalColored
3 points flexural strengthMPa (N.mm-2)950950
Compressive strengthMPa (N.mm-2 )34003400
Modulus of elasticityGPa220220
Tenacity K1CMPa.m88
Hardness (Vickers)MPa11501150
 unitNaturalColored
Linear thermal expansion10-6. K-110.410.4
Thermal conductivityW.m-1.K33
Specific heatJ.kg-1.K450450
Maximum temperature usingC12001000
 unitNaturalColored
Volume resistivityOhm.cm> 1010-