What is the purpose of aluminum nitride?

Aluminum nitride is an atomic crystal, belonging to diamond-like nitride, hexagonal crystal system, wurtzite crystal structure, non-toxic, aluminum nitride is white or off-white powder.

AlN can be stabilized up to 2200℃, with high room temperature strength, and the strength increases and decreases slowly with temperature. Aluminum nitride has good thermal conductivity and low thermal expansion coefficient, making it a good thermal shock material. It has strong corrosion resistance to molten metal and is an ideal crucible material for casting pure iron, aluminum or aluminum alloy.

Aluminum nitride is also an electrical insulator with good dielectric properties, and it is also very promising as an electrical component. The aluminum nitride coating on the gallium arsenide surface can protect it from ion implantation during the annealing process. Aluminum nitride is also a catalyst for the transformation of hexagonal boron nitride to cubic boron nitride.

Overview of aluminum nitride

Similar to various semiconductors, aluminum nitride powder has excellent thermal conductivity, high electrical insulation and thermal expansion characteristics, making it the best material for sintered bodies.

Aluminum nitride is stable at high temperatures in an inert atmosphere and melts at a temperature of approximately 2200°C. In vacuum, AlN decomposes at ~1800°C. In the air, surface oxidation will occur above 700°C. Even at room temperature, a surface oxide layer with a thickness of 5-10 nm was detected. The oxide layer can protect the material at temperatures up to 1370°C. Above this temperature, bulk oxidation will occur. Aluminum nitride is stable in hydrogen and carbon dioxide atmospheres up to 980°C.

The material slowly dissolves in inorganic acid by grain boundary erosion, and dissolves in strong alkali by erosion of aluminum nitride crystal grains. Aluminum nitride can withstand most molten salts (including chloride and cryolite).

Application of aluminum nitride

Aluminum nitride (AlN) is an inorganic non-metallic material of diamond-like nitride, which has good thermal conductivity and low thermal expansion coefficient. It is a good thermal shock material. Strong resistance to molten metal corrosion, it is an ideal crucible material for smelting and casting pure iron, aluminum or aluminum alloy. Aluminum nitride is also an electrical insulator with good dielectric properties, and it also has good application prospects in the field of electronic component manufacturing.

1. Manufacture of integrated circuit substrates, electronic devices, optical devices, radiators, high-temperature crucibles and preparation of metal-based and high-resolution composite materials

2. Thermally conductive silicon and thermally conductive epoxy.

3. Nano lubricants and antiwear agents.

4. High thermal conductivity plastic

Due to the piezoelectric properties of AlN, epitaxially grown thin-film crystalline aluminum nitride is used for surface acoustic wave sensors (SAW) deposited on silicon wafers. One application is radio frequency filters, which are widely used in mobile phones and are called film bulk acoustic resonators (FBAR). This is a MEMS device that uses aluminum nitride sandwiched between two metal layers.

AlN is also used to construct piezoelectric micromachined ultrasonic transducers, which emit and receive ultrasonic waves, which can be used for aerial ranging up to one meter.

Aluminum nitride powder price

The price of aluminum nitride products varies randomly with factors such as the production cost, transportation cost, international situation, exchange rate, and market supply and demand of aluminum nitride products. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for aluminum nitride product materials, please feel free to contact us for the latest price of aluminum nitride.

Aluminum Nitride Powder Supplier

As a global aluminum nitride powder supplier, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (molybdenum disilicide, lanthanum nitride (LaN powder, calcium silicide, iron boride), high-purity targets, functional ceramics and structural devices, and provides OEM services.