What is Aluminum Nitride?
Popular for its excellent thermal conductivity and electrical insulating features, it makes an ideal material to make semiconductors. In the field of light emitter technology, it is also utilized as a heat sink.
Aspects of Aluminum Nitride
Aluminum nitride can be described as an inorganic compound consisting of nitrogen as well as aluminum. It belongs to the wurtzite crystal and has a bandgap of 6. eV at ambient temperature. This makes it ideal for use in the optics of deep ultraviolet. It also functions as an electronic circuit carrier in semiconductors.
Aluminum Nitride (Al) is a technical ceramic material that comes in thin and thick forms. It is manufactured through the carbothermal reduction method. This process, however, can be costly, so a cheaper powder preparation process should be considered. A variety of sintering aids were used to raise the density of the material up to specifications.
Use of Aluminium Nitride
Aluminum nitride is a good choice to make optical material like nanotubes that can be used for chemical sensors. It can also be used substrate material in silicon processing. It is very resistant to corrosion, oxidation, as well as molten metals. It's stable even at higher temperatures with an inert atmospheric.
Aluminum nitride is found in virtually every metal. It is a grey-blue or white powder. It's soluble in water as well as inorganic acids. However, it's unstable in a hydrogen atmosphere. It is also highly flammable.
It is used for mobile phones, to form Radio frequency filters. It is also employed in medical imaging and robotics. Its piezoelectric property is also utilized in bulk thin-film acoustic resonances.
It has been reported that most of the current research is focused on creation of semiconductor (GaN or AlGaN) based LEDs that work in the ultraviolet which means that the wavelength of light is 250 nanometers. In May 2006 it was announced that a diode that was inefficient could emit light at the wavelength of 210 nanometers. A single crystal of aluminum nitride includes an energy gap that is 6.2eV determined by the measurement of vacuum ultraviolet reflectance. Theoretically, this gap allows certain wavelengths in the range of 200 nanometers to be able to pass through. However, when using it commercially, many issues need to be overcome. Aluminum nitride has been used in optoelectronic technology, including the inductive layer in optical storage interfaces, electronic chip carrier substrates with excellent thermal conductivity and military applications.
A epitaxial stretching process of AlN crystals is also used in the detection of acoustic waves on surfaces because of the properties characteristic of the AlN piezoelectric phenomenon. The detectors are positioned directly on silicon wafers. Only a handful of places can successfully make these thin films.
Aluminum nitride ceramics have high strength at room temperatures and high temperatures, a tiny expansion coefficient, and a high thermal conductivity. They can be utilized as heat exchangers for high-temperature structural parts.
Utilizing the corrosion resistance of iron, aluminum, and other alloys aluminum nitride-based ceramics can be utilized as crucibles or casting molds for smelting Al, Cu, Ag, Pb, and other metals.
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