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What is Aluminum Nitride

What is Aluminum Nitride?

Popular for its excellent conductivity, thermal conductivity, and electrical insulation characteristics, the aluminum nitride makes the ideal material for semiconductors. In light emitter lighting technology, it's also employed as a heat sink.

Aspects of Aluminum Nitride

The inorganic aluminum nitride mixture of nitrogen and Aluminum. It is part of the wurtzite crystal structure and features a bandgap as high as 6 eV at ambient temperature. This makes it suitable for applications in the field of optoelectronics with deep ultraviolet. It can also be used as circuit carriers in semiconductors.

Aluminum Nitride can be described as a dense technical ceramic material which is available in thin and thick varieties. It is manufactured using the carbothermal reduction process. This process is however, it can be costly, therefore an easier method of preparation must be explored. A variety of sintering aids were employed to increase the density of the powder to specifications.

Application of Aluminum Nitride

The aluminum nitride compound can be used in the manufacture of optical materials like nanotubes that can be used for chemical sensors. It is also used as substrate material in silicon processing. It is highly resistant to corrosion, oxidation and even molten metals. It's a stable material even at extreme temperatures, even in an inert air.

Aluminum nitride is discovered in any metal. It is a grey-blue or white powder. It's easily soluble when mixed with water and inorganic acids. However, it's unstable in a hydrogen atmosphere. It is also highly flammable.

It is utilized within mobile phones in order to create the radio frequency filter. It is also used in robotics and medical imaging. The piezoelectric properties of the material are utilized in bulk thin-film acoustic resonances.

There is a report that the bulk of recent research is focused around the development of semiconductor (GaN or AlGaN) based LEDs that work in the ultra-violet, in which the wavelength is 250 nm. In May 2006 it was reported that a diode with inefficiency could emit light with one 210nm wavelength. A single aluminum nitride crystal includes an energy gap that is 6.2eV calculated by the vacuum ultraviolet reflectance. Theoretically it is believed that the energy gap allows certain wavelengths on the order of 200 nanometers to traverse through. However, when you implement it commercially, many issues need to be solved. The aluminum nitride compound is employed in optoelectronic engineering, such as Inductive layers on optical storage interfaces, electronic chip carrier substrates that have excellent thermal conductivity and military applications.

The epitaxial stretch of AlN crystals also is utilized for surface acoustic wave detectors due to the properties of the AlN piezoelectric effect. The detectors are put upon the silicon wafer. Very few locations can be able to reliably produce these thin films.

Aluminum nitride-based ceramics possess high toughness at room temperature and high temperatures, with a low expansion coefficient, and good thermal conductivity, and can be utilized to create heat exchangers for structures that require high temperatures.

Utilizing the resistance to corrosion of aluminum, iron and other metals and alloys aluminum nitride clays can serve as crucibles as casting molds to smelt Al, Cu, Ag Pb, Pb, and many other metals.

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