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What is Aluminum Nitride

What is the term Aluminum Nitride?

Awarded for its outstanding thermal conductivity as well as its electrical insulating attributes, aluminum is an ideal material for creating semiconductors. In light emitter lighting technology, it's also used as a heat source.

Aspects of Aluminum Nitride

Aluminum nitride , an inorganic compound made up of nitrogen and aluminum. It belongs to the wurtzite crystal structure , and it has a bandgap measurement of 6 eV at the temperature of ambient. This makes it suitable for use in the domain of deep ultraviolet optoelectronics. It is also used in the form of a circuit bus semiconductors.

Aluminum Nitride is an extremely dense technical ceramic material that comes in thick and thin forms. It is produced by an enzymatic reduction process. This process is however, it can be costly, and the possibility of a less costly powder preparation method is required to be researched. Several sintering aids were also used to bring the density of the powder to specifications.

Applications of Aluminum Nitride

Aluminum nitride can be used for the production of optical materials such as nanotubes to make chemical sensors. It can also be used an substrate material for silicon processing. It is extremely resistant to oxidation, corrosion and molten metals. It's stable in high temperatures when in an inert atmosphere.

Aluminum nitride can be present in all metals. It is a grey-blue or white powder. It's insoluble in water as well as inorganic acids. It is, however, unstable in hydrogen atmospheres. It is also extremely flammable.

It is used with mobile phones to create radiation frequency filters. It is also employed in medical imaging and robotics. Its piezoelectric properties are also utilized in thin-film bulk audio resonators.

It has been reported that the majority of current research focuses on the development of semiconductor (GaN or AlGaN) powered LEDs that operate in the UV, where the wavelength of light is 250 nanometers. In May 2006 it was revealed that a diode with inefficiency could emit light at 220 nm in wavelength. A single aluminum nitride crystal includes an energy gap that is 6.2eV determined by the measurement of vacuum ultraviolet reflectance. Theoretically, the energy gap lets certain waves that have wavelengths on the order of 200 nanometers to travel through. However, for it to be implemented commercially, there are many challenges that need to be overcome. Aluminum nitride can be found in optoelectronics, for example, the inductive layer in optical storage interfaces, electronics, semiconductors that have high thermal conductivity, and military applications.

Stretching epitaxially of AlN crystals can also be used in surface-based acoustic detectors due to the properties characteristic of the AlN piezoelectric effect. The detectors are positioned upon the silicon wafer. Only a handful can safely make these films.

Aluminum nitride-based ceramics possess high strength at room temperatures and high temperatures, they have a lower expansion coefficient, and a high thermal conductivity, and can be used to create heat exchangers for structures with high temperatures.

Utilizing the corrosion resistance of aluminum, iron, and alloys of other metals Aluminum nitride ceramics may be used as crucibles and casting mold materials to smelt Al, Cu, Ag Pb, and other metals.

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