sapphire thermal conductivity
The thermal conductivity of sapphire is an important physical property that determines the performance of sapphire in the heat transfer process. The thermal conductivity of sapphire is roughly in the range of 25-50 W/(m-K).
Depending on the reference source, the thermal conductivity of sapphire has several different values: in its natural state, sapphire has a thermal conductivity of approximately 132.5 W/cmK, a value which also demonstrates sapphire’s excellent thermal conductivity.
sapphire thermal conductivity
There are many reasons for the high thermal conductivity of sapphire, including: crystal structure, chemical composition, and physical properties. Sapphire has high hardness, high transparency, high chemical stability and good insulating properties. There is some variation between the thermal conductivity of sapphire and temperature.
Generally, the thermal conductivity of sapphire decreases as the temperature increases. This is because an increase in temperature increases the thermal vibrations within the crystal, which prevents the efficient conduction of heat.
However, at very low temperatures, the thermal conductivity of sapphire may exhibit an abnormal increase, which may be due to quantum effects or other physical mechanisms at low temperatures.
