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What is Aluminum Nitride

What is Aluminum Nitride?

Awarded for its outstanding conductivity in thermal and electrical properties, aluminum nitride makes one of the best materials for making semiconductors. In light emitter lighting technology, it's used as a heat source.

Eigenschaften of Aluminum Nitride

Aluminum nitride , an inorganic compound made up of nitrogen and aluminum. It belongs to the wurtzite crystal structure and features a bandgap as high as 6 eV at temperatures of room temperature. This makes it suitable for use in the optics of deep ultraviolet. It also functions in the form of a circuit bus in semiconductors.

Aluminum Nitride is a dense technical ceramic material available in thin and thick varieties. It is made using the carbothermal reduction method. However, this method can be costly, therefore the possibility of a less costly powder preparation method needs to be researched. A variety of sintering aids were employed to raise the mass of the material back to specifications.

Applications of Aluminum Nitride

Aluminum Nitride can be used for the production of optical materials such as nanotubes used in chemical sensors. It is also used as a substrate for silicon processing. It is very resistant to corrosion, oxidation and even molten metals. It's stable at elevated temperatures when in an inert atmosphere.

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

It is used on mobile devices to form wireless frequency filters. It is also utilized in robotics and medical imaging. Its piezoelectric properties are also utilized in bulk thin-film acoustic resonances.

It was reported that the majority of current research is on the development of semiconductor (GaN or AlGaN) -based LEDs that operate in the ultraviolet, in which the wavelength is 250 nanometers. In May 2006 it was revealed that a diode that was inefficient could emit light with a wavelength of 210 nm. A single crystal of aluminum nitride is characterized by an energy difference of 6.2eV calculated by the vacuum ultraviolet reflectance. Theoretically it is believed that the energy gap permits certain waves with dimensions of 200 nanometers to pass through. However, when implementing it commercially, many difficulties need to be overcome. Aluminum nitride is widely used in optoelectronics. It is used as inductive layers in optical storage interfaces and electronic substrates. It is also used in chip carriers, electronic components that have high thermal conductivity, as well as military applications.

It is known that epitaxial stretching in AlN crystals is additionally used for surface acoustic wave detectors because of the properties that result from the AlN piezoelectric effect. The detectors sit in the silicon wafer. Very few locations can successfully make these thin films.

Ceramics made of aluminum nitride have high durability at room temperature as well as high temperatures, a tiny expansion coefficient, and high thermal conductivity. They can be utilized as heat exchangers on structure parts that operate at high temperatures.

Utilizing the resistance to corrosion of aluminum, iron, and other metals and alloys aluminum nitride-based ceramics can serve as crucibles and casting mold materials to smelt Al, Cu, Ag Pb, and other metals.

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