Silicon Nitride
Silicon nitride is a chemical compound composed of silicon (Si) and nitrogen (N). It belongs to the family of ceramics and is known for its high strength, hardness, and thermal stability. Silicon nitride can be synthesized through various methods, including reaction of silicon with nitrogen gas or by deposition from precursor compounds.
The following table provides a comprehensive list of silicon nitride properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Note: click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Chemical Formula | Si3N4 |
| Molar Mass | 140.284 g/mol |
| Density | 3170 kg/m3 |
| Thermal Properties | Metric |
| Melting Point | 1900 °C |
| Thermal Conductivity (α) | 17 W/m·K |
| Thermal Conductivity (β) | 28 W/m·K |
| Specific Heat Capacity (Cp) | 700 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.5×10-6 1/°C |
Note: unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017.