The thermal conductivity k of ceramics has a wide range,
Thermal conductivity k of some ceramics at 25℃, unit [W? /(m？ ℃)]
Ceramic material -k
BeO porcelain -243
Aluminum nitride (AlN)- 175
Hexagonal boron nitride (BN)-56.94
Magnesium oxide ceramics -4 1.87
Alumina 96%% porcelain -3 1.77
Alumina (Al2O3)99%% Porcelain -3 1.4
Silicon nitride (Si3N4)- 12.56
(The data is quoted from Technical Manual of Electrical and Electronic Insulation, page 482)
The high thermal conductivity k of ceramics means that the thermal conductivity is fast,
At present, the commonly used radiator materials in electronic equipment are aluminum, and its thermal conductivity.
k-204，
In addition, silver, K-4 19,
Copper, k-330,
Kim, K-292,
(Quoted from Principle of Structural Design of Electronic Equipment, page 12)
It can be seen that the thermal conductivity of BeO ceramics is higher than that of aluminum.
If the radiator is ceramic, different shapes should be designed according to different heat dissipation methods (such as natural heat dissipation and forced heat dissipation).