What are Aluminum Nitride Characteristics?


Apr 11, 2023 ,

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History of Aluminum Nitride Aluminium nitride A type of ceramic material that has excellent comprehensive performance and whose research can be traced back over 100 years. F. Birgeler discovered it in 1862. A. Gutter synthesized it by J.W. The first use of mallets was in 1877. However, it didn’t find any practical use in the 100 years that followed. It was used only as a fertilizer, but as a nitrogen fixing agent.

Aluminum nitride can be sintered because it is a covalent chemical with a low self–diffusion coefficient. Aluminum nitride ceramics first became commercially viable in the 1950s. They were used as refractory materials during the smelting process of aluminum alloys, pure iron, and aluminum. The technology used to prepare aluminum nitride is becoming more sophisticated and the application range has expanded. This has been evident since the 1970s. The 21st century has seen rapid developments in microelectronics technology. Electronic machine, and electronic parts are moving towards miniaturization, light-duty integration, and a development direction such as high reliability, high power output, more complex heat dissipation devices to the substrate and packaging material that is requested higher, which will further encourage the growth of the aluminum industry.

Aluminum Nitride Characteristics
Aluminum nitride, also known as AlN, is a hexagonal wurtzite-covalent bond compound that has the following lattice parameters: A =3.114, and C =4.986. Pure aluminum Nitride is a blue-white semiconductor material with a wide bandgap of iii to vwide.

Aluminum nitride is superior to alumina because it has excellent characteristics such as high strength, high volume and pressure resistance, and thermal expansion coefficient.

Aluminium Nitride Thermal Conductivity Method
One of the many important properties of aluminum Nitride is its high thermal conductivity. There has been a lot of research into the thermal conductivity mechanism in aluminum nitride. A theoretical system that is almost perfect has been developed. Heat transfer through lattice (or lattice vibration) is the key mechanism. It can be done by either lattice waves or thermal waves. Quantum mechanics shows that lattice wave can be considered the motion of a particle (the phonon), according to quantum mechanics. Wave-particle duality can also be found in thermal waves. Thermal phonons transmit heat by coordinating vibrations between structural elements (atoms and ions) in a mutually restricted manner. The thermal conductivity of crystals with perfect structures and non-elastic bodies can be very high if they are free from interference and scattering. The main controls on thermal conductivity are crystal defects and the phonon scattering.

AlN has a theoretical thermal conductivity value of 320W*m-1*K-1. However, the thermal conductivity actually measured by AlN is 200W*m-1*k-1 because of impurities and defects. This is because the crystal has a variety of structural elements that cannot be distributed uniformly and the current-carrying, phonons are constantly scattered.

Aluminum Nitride Price
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