Syalon 201 – An Advanced Silicon Nitride Ceramic
Syalon 201, a silicon nitride based advanced ceramic, is a specially formulated grade based on the β-sialon phase found in Syalon 101 but with a crystalline intergranular phase of yttrium aluminium garnet (YAG). This enables Syalon 201 to exhibit significant retention of strength at high temperatures up to 1350°C.
The table below lists typical mechanical, thermal and electrical property data for Syalon 201.
Physical property data for Syalon 201
| Property | Value | Units |
|---|---|---|
| 3 point RT MOR | 945 | MPa |
| 3 pt MOR at 1000°C | 750 | MPa |
| 3 pt MOR at 1350°C | 600 | MPa |
| Weibull Modulus | 10 | - |
| RT Unit Tensile Strength | 350 | MPa |
| Young's Modulus | 290 | GPa |
| Hardness (HRA) | 92.7 | - |
| Hardness (Vickers) | 1600 | Kg/mm2 |
| K¹C | 4.5 | MPam½ |
| Poisson's Ratio | 0.19 | - |
| Density | 3.24 | g/cc |
| Porosity | 0 | % |
| α | 3X10-6 | K-1 |
| λ | 21 | W/(mK) |
| Thermal Shock | 600 | ΔT°C |
| Elec. Resist. | 1010 | ohm m |
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