What is Aluminum Nitride?
This material is noted for its thermal conductivity and electrical insulating characteristics, the aluminum nitride makes an ideal material for the production of semiconductors. In the field of light emitter technology, it's utilized as a heating element.
Eigenschaften of Aluminum Nitride
Aluminum nitride is an inorganic compound made up of nitrogen and aluminum. It is part of the wurtzite crystal and has a bandgap value of 6 eV at temperatures of room temperature. This makes it ideal for applications in the domain of deep ultraviolet optoelectronics. It is also utilized in the form of a circuit bus in semiconductors.
Aluminum Nitride is an extremely dense technical ceramic that is available in thin and thick forms. It is made by the carbothermal reduction method. The process could be expensive, so a cheaper powder preparation process has to be investigated. Different sintering equipments were employed to increase the strength of the material within specifications.
Affectation of Aluminum Ntride
The aluminum nitride compound can be used for optical components such as nanotubes for chemical sensors. It can also be used substrate material in silicon processing. It is highly resistant corrosion, oxidation and molten metals. It's stable at high temperatures under an inert gas atmosphere.
Aluminum nitride can be present in all metals. It is a gray to white powder. It's easily soluble when mixed with water as well as inorganic acids. However, it's unstable in hydrogen atmospheres. It is also highly flammable.
It is used for mobile phones, to create the radio frequency filter. It is also utilized in robotics and medical imaging. The piezoelectric properties of the material are employed in bulk acoustic resonators.
There is a report that the majority of current research is focused on development of semiconductor (GaN or AlGaN) built LEDs that operate in the wavelength of the ultraviolet where the wavelength of light is 250 nanometers. In May 2006 it was reported that an inefficient light source could emit light at a wavelength of 210 nm. A single aluminum nitride crystal has an energy gap of 6.2eV assessed by vacuum ultraviolet reflectance. Theoretically the gap permits waves with dimensions of 200 nanometers to be able to pass through. However, when implementing it commercially there are many hurdles that have to be overcome. Aluminum nitride is widely used in optoelectronics. It is used as inductive layers for optical storage interfaces, electronics, semiconductors with high thermal conductivity, as well as military applications.
A epitaxial stretching process of AlN crystals is additionally used in the detection of acoustic waves on surfaces due to the characteristics inherent to the AlN piezoelectric effects. The detectors sit onto the silicon substrate. Only a handful can safely make these films.
Aluminum nitride ceramics have high durability at room temperature as well as high temperatures, a tiny expansion coefficient, and a high thermal conductivity, and can be used as heat exchangers for high-temperature structural parts.
Utilizing the resistance to corrosion of iron, aluminum, as well as other alloys and metals aluminum nitride clays can be used as crucibles , as well as casting mold materials to smelt Al, Cu, Ag Pb, and other metals.
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