Applied Nanotech’s new passive thermal management material, CarbAl™, is a carbon-based material with a unique combination of low density, high thermal diffusivity, and low coefficient of thermal expansion. CarbAl™ has a density of 1.75 g/cm3 compared to 2.7 g/cm3 for aluminum and 8.9 g/cm3 for copper. While copper has a slightly higher thermal conductivity than CarbAl™, 390 … [Read more...]
Thermal Diffusivity
Thermal diffusivity is a measure of the transient thermal response of a material to a change in temperature and the term thermal diffusivity (α) is defined asα= k/(ρ x cp) where αis the thermal diffusivity (m2/sec) k is the thermal conductivity (W/m-K) ρ is the density (kg/m3) cp is the heat capacity (J/kg-K) It should be noted that each of these quantities can … [Read more...]
