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What is Aluminum Nitride

What is Aluminum Nitride?

The material is known for its exceptional conductivity to heat and electrical insulating features, it is an ideal material for creating semiconductors. In light emitter lighting technology, it is also utilized as a heating element.

Eigenschaften of Aluminum Nitride

Aluminum nitride , an inorganic mixture of nitrogen and Aluminum. It is part of the wurtzite-wurtzite Crystal Structure and has a bandgap value of 6 eV at room temperature. This makes it ideal for use in the field of optoelectronics with deep ultraviolet. It also functions as circuit carriers in semiconductors.

Aluminum Nitride is a hard technical ceramic that is available in thin and thick versions. It is produced by a carbothermal reduction process. This process is however, it can be costly, and the possibility of a less costly powder preparation method has to be investigated. There were a variety of sintering tools employed to raise the strength of the material within specifications.

Application of Aluminum Nitride

Aluminum nitride is a good choice in the manufacture of optical materials including nanotubes for chemical sensors. It is also used as a substrate material for silicon processing. It is highly resistant corrosion, oxidation, and molten metals. It's stable even at higher temperatures with an inert atmospheric.

Aluminum nitride can be found in nearly every metal. It is a gray or white powder. It's easily soluble when mixed with water and inorganic acids. However, it is unstable in a hydrogen atmosphere. Also, it is highly flammable.

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

It was reported that the majority of current research is on the creation of semiconductor (GaN or AlGaN) based LEDs that operate in the UV, in which the wavelength is 250 nm. In May 2006 it was reported that an inefficient diode could emit light with 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 gap allows some waves with wavelengths in the vicinity of 200 nanometers to traverse through. However, when it is implemented commercially, there are many challenges that need to be solved. Aluminum nitride is widely used in optoelectronics, for example, inductive layers in optical storage interfaces, electronic semiconductors as chip carriers with high thermal conductivity, and military applications.

An epitaxial stretching technique for AlN crystals is also used in the surface acoustic wave detectors due to the characteristics of the AlN piezoelectric effect. The detectors will be placed onto the silicon substrate. Only a few places are able to effectively make these thin films.

Aluminum nitride ceramics are strong in durability at room temperature as well as higher temperatures, a modest expansion coefficient, and good thermal conductivity. They are suitable as heat exchangers materials for structures that require high temperatures.

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

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