LFA 1000 – Aluminum oxide Al2O3 – Thermal diffusivity/ conductivity
Ceramics – Thermal conductivity – Thermal diffusivity
Aluminum oxide, commonly known as alumina, stands out as a high-performance ceramic material, constituting a chemical compound of aluminum and oxygen. Its exceptional properties encompass excellent electrical insulation, high mechanical strength, substantial hardness, superior resistance to corrosion and wear, and a relatively high thermal conductivity for a ceramic material, ranging around 30-35 W/mK.
The versatility of alumina finds expression in various applications, such as its use in aluminum metal production, as an abrasive material, and in the manufacturing of refractories.
The provided graph illustrates a Laser Flash Analysis (LFA) measurement, capturing the thermal diffusivity and thermal conductivity of an alumina sample across a temperature range from room temperature to 1000°C. Literature values for density and specific heat capacity were employed to calculate the thermal conductivity, resulting in a room temperature value of approximately 32 W/mK, aligning with the previously mentioned range.
The observed trend in the graph reveals a decline in both thermal diffusivity and thermal conductivity as the temperature rises. This behavior aligns with anticipated expectations and further underscores the dynamic thermal characteristics of alumina across varying temperature conditions.
Related instruments
LFA 1000
LFA 1000 – True LaserFlash Analyzer- The premium device Temperature range -125 °C/ -100 °C bis 500 °C and RT up to 1250°C/ 1600°C/ 2000°C/ 2800°C