Nanoceramic is created through a heavily patented electro-chemical oxidation (ECO) process that alters the nano-crystalline structure of aluminium to create a thermally efficient dielectric. Most grades of aluminium, including some alloys, can be processed in this way; in addition, many metal composites (such as AlSiC) can receive the treatment.
The process is environmentally friendly and applies extreme electrical and thermal conditions to the aluminium to perform the conversion. The resulting nano-crystalline grains of ceramic are atomically bonded to the surface of the aluminium, effectively rendering them inseparable. The thickness of this dielectric layer – the Nanoceramic – is extremely tightly controlled resulting in a dense, uniform layer of ceramic formed from alumina particles measuring on the nanoscale – that measure 20-40nm across.
To apply this patented process on an industrial scale, Cambridge Nanotherm has developed proprietary production equipment capable of handling the most common panel sizes used in the PCB industry. These large panels dwarf the small ceramic panels used in semiconductor packaging – bringing massive cost benefits to users of either alumina (AL2O3) or aluminium nitride (AlN) substrates in high power applications – such as for LED packaging, COB LED devices or IGBT or MOSFET devices.