Silicon oxynitride (Si₂N₂O) is an advanced ceramic compound combining silicon nitride and silicon oxide phases, offering a unique combination of thermal stability and mechanical performance in high-temperature environments. This material is primarily used in aerospace and automotive applications where components must withstand extreme temperatures and thermal cycling, such as gas turbine engines, brake systems, and heat exchanger components. Si₂N₂O is valued for its superior oxidation resistance compared to pure silicon nitride, making it particularly attractive for long-duration high-temperature service where chemical durability is critical.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 123.3 | GPa | DFT · OptB88vdW | ||
Poisson's Ratio(ν) | 0.2000 | - | DFT · OptB88vdW | ||
Shear Modulus(G) | 98.57 | GPa | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.765 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 5.124 | eV | DFT · OptB88vdW | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 6.748 | - | DFT · OptB88vdW | ||
| ↳ | 6.240 | - | DFT · PBE | ||
| ↳ | 4.791 range 3.367–6.215median of 2 measurements | - | DFT · PBEsol | ||
High-Frequency Dielectric Constant (ε∞)(ε∞) | 3.406 | - | DFT · OptB88vdW | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | DFT · PBE | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | DFT · PBE | ||
Magnetic Moment(μB) | 0.000 | µB | DFT · OptB88vdW | ||
Piezoelectric Modulus(eij)2 entries | 0.4744 | C/m² | DFT · OptB88vdW | ||
| ↳ | 0.2481 | C/m² | DFT · PBE | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | DFT · PBE | ||
Thermoelectric Power Factor(PF)2 entries | 0.000782 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.000969 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -116.5 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 361.2 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.1665 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf) | -1.555 | eV/atom | DFT · OptB88vdW |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data