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What is Aluminum Nitride?
Popular for its excellent energy conductivity and electrically insulating attributes, aluminum is an ideal material for creating semiconductors. In the field of light emitter technology, it's also used as a heat source.
Properties of Aluminum Nitride
Aluminum nitride (Ani) is an inorganic compound composed of nitrogen and aluminum. It belongs to the wurtzite crystal and has a bandgap of 6. eV at room temperature. This makes it suitable for applications in the fields of deep UV optoelectronics. It also functions as a circuit carrier semiconductors.
Aluminum Nitride can be described as a dense technical ceramic that is available in thin and thick forms. It is manufactured using the carbothermal reduction process. This process is however, it can be costly, and an easier method of preparation is required to be researched. A variety of sintering aids were employed to increase the mass of the material back to specifications.
Applications of Aluminum Nitride
Aluminum Nitride can be used in the manufacture of optical materials such as nanotubes to make chemical sensors. It is also used as an substrate material for silicon processing. It is extremely resistant to erosion, corrosion and molten metals. It's stable at elevated temperatures in an inert atmosphere.
Aluminum nitride is found in nearly every metal. It is a gray-white to white powder. It's easily soluble when mixed with water and inorganic acids. However, it's unstable in hydrogen atmospheres. It's also extremely flammable.
It is utilized in mobile phones to create the radio frequency filter. It is also utilized in robotics and medical imaging. The piezoelectric properties it has are employed in bulk acoustic Resonators.
It was reported that most of the present research focuses on creation of semiconductor (GaN or AlGaN) LEDs that operate in the UV, which means that the wavelength of light is 250 nm. In May 2006 it was reported that an inefficient dimer could emit light with around 210 nanometers. A single aluminum nitride crystal has an energy gap of 6.2eV which is measured using vacuum ultraviolet reflectance. Theoretically, the energy gap allows some waves with dimensions of 200 nanometers to pass through. However, when it is implemented commercially, many difficulties need to be overcome. Aluminum nitride is utilized in optoelectronics. It is used as an inductive layer for optical storage interfaces, electronic substrates. It is also used in chip carriers, electronic components with high thermal conductivity, and military applications.
It is known that epitaxial stretching in AlN crystals is also used in surface acoustic wave detectors due to the properties associated with the AlN piezoelectric effects. The detectors are positioned in the silicon wafer. Only a handful of places can safely make these films.
Ceramics made of aluminum nitride have high strength at room temperature and high temperatures, and a very low expansion coefficient and excellent thermal conductivity. They can be used as heat exchangers for structures that require high temperatures.
Utilizing the corrosion resistance of aluminum, iron as well as other alloys and metals the aluminum nitride and other ceramics can be used to make crucibles and casting molds materials for smelting Al, Cu, Ag Pb, Pb, and many other metals.
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