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What is the term Aluminum Nitride?
Awarded for its outstanding conductivity in thermal and electrical property, aluminium nitride makes an ideal material for the production of semiconductors. In light emitter lighting technology, it's utilized as a heating element.
Aspects of Aluminum Nitride
Aluminum nitride (Ani) is an inorganic compound of aluminum and nitrogen. It belongs to the wurtzite crystal structure and has a spectrum of 6 eV at room temperature. This makes it suitable for applications in the fields of deep UV optoelectronics. It can also be used in the form of a circuit bus semiconductors.
Aluminum Nitride, a very dense technical ceramic available in thin and thick forms. It is made using an acid reduction process. But, this process could be costly, so an alternative process for preparation of powder that is less expensive must be explored. Sintering aids of various kinds were employed to improve the density of the material to specifications.
Use of Aluminium Nitride
Aluminum nitride can be used to make optical material like nanotubes for chemical sensors. It can also be used a substrate material for silicon processing. It is resistant to corrosion, oxidation and molten metals. It is stable even at high temperatures when in an inert atmosphere.
Aluminum nitride is present in all metals. It is a white to gray-blue powder. The powder is water-soluble as well as inorganic acids. However, it is unstable in hydrogen atmospheres. Also, it is highly flammable.
It is used as a component in smartphones to form wireless frequency filters. It is also used in robotics and medical imaging. Its piezoelectric qualities are employed in thin-film bulk acoustic Resonators.
It has been reported that the bulk of present research focuses on development of semiconductor (GaN or AlGaN) based LEDs that operate in the wavelength of the ultraviolet where the wavelength of light is 250 nm. In May 2006 it was announced that an inefficient diode was able to emit light with an nm wavelength of 210. A single crystal of aluminum nitride includes an energy gap that is 6.2eV measured by vacuum ultraviolet reflectance. Theoretically this allows certain wavelengths that are around 200 nanometers to pass through. But, when it's implemented commercially, a number of challenges need to be solved. Aluminum nitride has been used in optoelectronics engineering, such as the inductive layer in optical storage interfaces and electronic substrates, chip carriers that have high thermal conductivity, as well as military applications.
A epitaxial stretching process of AlN crystals is also used for surface acoustic wave detectors due to the properties inherent to the AlN piezoelectric effect. The detectors will be placed directly on silicon wafers. Only a handful of places can be able to reliably produce these thin films.
The aluminum nitride materials have a high quality at room temperature and high temperature, a small expansion coefficient, and good thermal conductivity, and are suitable as heat exchangers for the construction of high-temperature structures.
Utilizing the resistance to corrosion of aluminum, iron, and other metals and alloys the aluminum nitride and other ceramics can be utilized as crucibles or casting molds for melting Al, Cu, Ag Pb, and various other metals.
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