NSM Archive - Boron Nitride (BN) - Thermal properties
Thermal properties
- Basic parameters
- Thermal conductivity
- Temperature dependence of the specific heat
- Linear thermal expansion coefficient
- Thermal expansion at different pressure
- Phase diagrams
Basic parameters
Zinc Blende crystal structure
| Remarks | Referens | ||
| Bulk modulus | 400 GPa | ||
| Debye temperature | 1700 K | ||
| Melting point, Tm | 2973° C | also see Phase diagrams for BN. | Wentorf (1957) |
| Specific heat | ~0.6 J g-1°C -1 | ||
| Thermal conductivity experimentally achieved theoretically estimated |
7.4 W cm-1 °C -1 ~13 W cm-1 °C -1 |
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| Thermal expansion, linear |
1.2·10-6 °C -1 |
Termal properties for Hexagonal crystal structure
| Remarks | Referens | ||
| Debye temperature | 400 K | ||
| Bulk modulus | 36.5 GPa | ||
| Melting point | see Phase diagrams for BN. | Solozhenko (1994) and Solozhenko et al.(1998) | |
| Decomposition temperature, Tdec | 2600(100) K | Janaf Thermochemical Tables (1965) | |
| Specific heat | ~0.8 J g-1°C -1 | ||
| Thermal conductivity parallel to the c axis perpendicular to the c axis |
=<0.3 W cm-1 °C -1 =<6 W cm-1 °C -1 |
Rumyantsev et al. (2001) | |
| Thermal expansion, linear parallel to the c axis perpendicular to the c axis |
38·10-6 °C -1 -2.7·10-6 °C -1 |