Al heat sink coated with nanoporous layer of alumina

Heat sink devices are mainly used in microprocessor cooling, light-emitting diode lamps, soldering and so on.

It is known as an aluminum heat sink covered by nano-porous Al2O3 coating containing pores with diameter less than 10 nm. It shows significant improvement in corrosion resistance and heat transfer. High surface area to volume ratio of nanopores leads to high heat transfer.