Yttria (Y2O3 sintered 99.9%) vs YSZ 7-8 wt% Yttria (t'-phase TBC grade)
Property comparison of Yttria (Y2O3 sintered 99.9%) and YSZ 7-8 wt% Yttria (t'-phase TBC grade), both ceramic.
| Property | Yttria (Y2O3 sintered 99.9%) | YSZ 7-8 wt% Yttria (t'-phase TBC grade) | Difference |
|---|---|---|---|
| Poisson ratio | 0.3 | 0.27 | -10% |
| Density | 4,950 kg/m³ | 5,900 kg/m³ | +19% |
| Thermal conductivity | 14 W/m·K | 2.5 W/m·K | -82% |
| Specific heat | 450 J/kg·K | 460 J/kg·K | +2% |
| Coefficient of thermal expansion | 0.000007 1/K | 0.000011 1/K | +49% |
Difference is YSZ 7-8 wt% Yttria (t'-phase TBC grade) 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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