NSM Archive - Boron Nitride (BN) - Thermal properties

BN - Boron Nitride

Thermal properties


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
   
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
   

Wurtzite, Zinc Blende & Hexagonal crystal structure at 300