Yttria (Y2O3 sintered 99.9%) vs Zirconia-Toughened Alumina (ZTA 20 vol% ZrO2)
Property comparison of Yttria (Y2O3 sintered 99.9%) and Zirconia-Toughened Alumina (ZTA 20 vol% ZrO2), both ceramic.
| Property | Yttria (Y2O3 sintered 99.9%) | Zirconia-Toughened Alumina (ZTA 20 vol% ZrO2) | Difference |
|---|---|---|---|
| Poisson ratio | 0.3 | 0.25 | -17% |
| Density | 4,950 kg/m³ | 4,050 kg/m³ | -18% |
| Thermal conductivity | 14 W/m·K | 18 W/m·K | +29% |
| Specific heat | 450 J/kg·K | 850 J/kg·K | +89% |
| Coefficient of thermal expansion | 0.000007 1/K | 0.000009 1/K | +18% |
Difference is Zirconia-Toughened Alumina (ZTA 20 vol% ZrO2) relative to Yttria (Y2O3 sintered 99.9%). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
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