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What is Aluminum Nitride

What is Aluminum Nitride?

Popular for its excellent energy conductivity and electrically insulating qualities, aluminum nitride is an excellent material for making semiconductors. In the field of light emitter technology, it can also be employed as a heat-sink.

Eigenschaften of Aluminum Nitride

Aluminum nitride is an inorganic compound composed of nitrogen and aluminum. It belongs to the wurtzite-wurtzite Crystal Structure and it has a bandgap measurement of 6 eV at temperatures of room temperature. This makes it ideal for use in the optics of deep ultraviolet. It is also used as an electronic circuit carrier in semiconductors.

Aluminum Nitride (Al) is a technical ceramic, which is offered in thin and thick forms. It is manufactured through the carbothermal reduction process. However, this method can be costly, and there is a more economical method for powder preparation that needs to be investigated. Different sintering equipments were employed to increase the mass of the material back to specifications.

The use of aluminum nitride

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

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

It is utilized on mobile devices to create radio frequency filters. It is also used in medical imaging and robotics. Its piezoelectric characteristics are employed in thin-film bulk acoustic resonances.

It was reported that the majority of current research is on the creation of semiconductor (GaN or AlGaN) LEDs that operate in the ultraviolet in which the wavelength is 250 nm. In May 2006, it was revealed that a diode with inefficiency could emit light with the wavelength of 210 nanometers. A single aluminum nitride crystal can have an energy gap as high as 6.2eV calculated by the vacuum ultraviolet reflectance. Theoretically the gap permits certain waves with wavelengths on the order of 200 nanometers to traverse through. However, when you implement it commercially, a number of challenges need to be resolved. Aluminum nitride is widely used in optoelectronics engineering, such as inductive layers used in optical storage interfaces, electronic chip carrier substrates that have high thermal conductivity, and military applications.

Epitaxial stretching of AlN crystals can also be used in surface-based acoustic detectors because of the properties inherent to the AlN piezoelectric force. The detectors are placed over the silicon wafer. Only very few places can reliably make these thin films.

Aluminum nitride has high strength at room temperatures and higher temperatures, a modest expansion coefficient, and high thermal conductivity. They can be used to create heat exchangers for structure parts that operate at high temperatures.

Utilizing the corrosion resistance of iron, aluminum, and other metals and alloys Aluminum nitride ceramics may be utilized as crucibles or casting molds for smelting Al, Cu, Ag Pb, Pb and other metals.

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