What is Aluminum Nitride

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What is the term Aluminum Nitride?

Famous for its superior temperature conductivity and electrically insulating features, it makes an ideal material for creating semiconductors. In light emitter lighting technology, it is also utilized as a heating element.

Property of Aluminium Nitride

Aluminum nitride is an inorganic mixture of nitrogen and Aluminum. It belongs to the wurtzite structure of crystals and features a bandgap as high as 6 eV at room temperature. This makes it ideal for use in the field of optoelectronics with deep ultraviolet. It is also utilized as a circuit carrier in semiconductors.

Aluminum Nitride is a hard technical ceramic material that comes in thin and thick varieties. It is produced using an enzymatic reduction process. However, this process can be expensive, so an easier method of preparation should be considered. Many sintering aids have been utilized to bring the amount of material to specifications.

Use of Aluminium Nitride

Aluminum Nitride can be used to make optical material including nanotubes for chemical sensors. It can also be used a silicon substrate processing. It is extremely resistant to corrosion, oxidation and molten metals. It is stable even at high temperatures when in an inert atmosphere.

Aluminum nitride can be found in almost all metals. It is a gray-blue to white powder. It is soluble in water as well as inorganic acids. However, it is unstable in a hydrogen atmosphere. It is also extremely flammable.

It is used within mobile phones in order to create radio frequency filters. It is also used in robotics and medical imaging. Its piezoelectric qualities are used in thin-film bulk acoustic resonators.

It has been reported that most of the current research is focused on development of semiconductor (GaN or AlGaN) made LEDs which operate in the ultraviolet which means that the wavelength of light is 250 nanometers. In May 2006 it was reported that an inefficient light source could emit light at about 210 nanometers in wavelength. A single aluminum nitride crystal features an energy-gap of 6.2eV determined by the measurement of vacuum ultraviolet reflectance. Theoretically, the energy gap allows some waves having dimensions of 200 nanometers to travel through. However, when it is implemented commercially, a number of challenges need to be solved. Aluminum Nitride is used in optoelectronics. This includes semiconductor layers in optical storage interfaces, electronic substrates. It is also used in chip carriers, electronic components with high thermal conductivity, and military applications.

Epitaxial stretching of AlN crystals also is utilized in the surface acoustic wave detectors due to the properties of the AlN piezoelectric force. The detectors are mounted directly on silicon wafers. There are only a handful of places that can consistently produce these thin films.

Aluminum nitride ceramics have high strength at room temperature and high temperatures, and a very low expansion coefficient, as well as good thermal conductivity, and are suitable as heat exchangers for high-temperature structural parts.

Utilizing the resistance to corrosion of aluminum, iron as well as other alloys and metals, aluminum nitride ceramics can be used to make crucibles and casting molds for melting Al, Cu, Ag Pb, Pb and other metals.

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