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What is Aluminum Nitride

What is Aluminum Nitride?

Famous for its superior thermal conductivity and electrical insulating properties, aluminum nitride is the ideal material for semiconductors. In the field of light emitter technology, it's also employed as a heater.

Eigenschaften of Aluminum Nitride

Aluminum nitride is an inorganic compound consisting of nitrogen as well as aluminum. It belongs to the wurtzite crystal and features a bandgap as high as 6 eV at temperatures of room temperature. This makes it ideal for use in the optics of deep ultraviolet. It also functions on circuit cards semiconductors.

Aluminum Nitride is a hefty technical ceramic, which is offered in thin and thick varieties. It is made by the carbothermal reduction method. This process is however, it can be costly, and an easier process to prepare the powder is required to be researched. Different sintering equipments were employed to raise the mass of the material back to specifications.

Application of Aluminum Nitride

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

Aluminum nitride can be found in nearly every metal. It is a gray-white to white powder. It's water-soluble as well as inorganic acids. But, it's unstable in a hydrogen atmosphere. It is also highly flammable.

It is employed as a component in smartphones to form filtering of radio frequencies. It is also employed in medical imaging and robotics. These properties are used in thin-film bulk acoustic resonators.

It was reported that most of the current research is on the development of semiconductor (GaN or AlGaN) made LEDs which operate in the UV, where the wavelength of light is 250 nm. In May 2006 it was reported that a diode that was inefficient could emit light at around 210 nanometers. A single aluminum nitride crystal features an energy-gap of 6.2eV assessed by vacuum ultraviolet reflectance. Theoretically, the energy gap allows some waves with wavelengths on the order of 200 nanometers to pass through. However, when it comes to implementing it commercially, many difficulties need to be overcome. Aluminum nitride can be found in optoelectronics, for example, inductive layers in optical storage interfaces, electronic semiconductors as chip carriers with high thermal conductivity, as well as military applications.

It is known that epitaxial stretching in AlN crystals also is utilized in the detection of acoustic waves on surfaces due to the properties of the AlN piezoelectric force. The detectors are put onto the silicon substrate. There are only a handful of places that can effectively make these thin films.

The aluminum nitride materials have a high resistance to temperature changes and high temperatures, they have a lower expansion coefficient, and a high thermal conductivity, and are suitable as heat exchangers on high-temperature structural parts.

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

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