Aluminum nitride is a high thermal conductivity material of inorganic powder

Overview of Aluminum Nitride AlN Powder

Aluminum nitride (AlN) is a solid nitride of aluminum. It has a high thermal conductivity of up to 321 W/(m K) and is an electrical insulator. Its wurtzite phase (w-AlN) has a band gap of about 6 eV at room temperature and has potential applications in optoelectronics operating at deep ultraviolet frequencies.

Aluminum nitride is stable at high temperatures in an inert atmosphere, melting at about 2200 °C. In a vacuum, AlN decomposes at about 1800 °C. In air, surface oxidation occurs above 700 °C, and even at room temperature, a 5-10 nm thick surface oxide layer is detected. This oxide layer protects the material at temperatures up to 1370 °C. Above this temperature extensive oxidation occurs. Aluminum nitride is stable up to 980 °C in hydrogen and carbon dioxide atmospheres. The material dissolves slowly in mineral acids by grain boundary erosion and in strong bases by erosion of aluminum nitride grains. The material hydrolyzes slowly in water. Aluminum nitride is resistant to attack by most molten salts, including chlorides and cryolite. Aluminum nitride can be patterned using Cl2-based reactive ion etching.

Application of Aluminum Nitride AlN Powder

Aluminum nitride is a high thermal conductivity material of inorganic powder. Due to its high thermal conductivity, good insulation, low dielectric constant, and the considerable expansion coefficient and excellent comprehensive properties of silicon materials, it has attracted more and more attention and is widely used in large-scale integrated circuits, electronic substrates, High thermal conductivity, thermally conductive inorganic fillers, high-performance structural ceramics and other fields.

With the advent of the 5G era, various electronic devices are becoming more and more integrated and their functions are becoming more and more powerful. In order to improve the heat dissipation performance of various encapsulation resins used in the electronic field, the best way is to add inorganic insulating fillers with high thermal conductivity to the materials. Aluminum nitride is one of the best options. In order to increase the filling amount, the powder is required to be dense and spherical, and the particle size ranges from tens of microns to hundreds of microns, so as to ensure that the particle size and particle size of the composite material can achieve high filling and good fluidity.

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, widely used in mobile phones, which are known as thin-film bulk acoustic resonators (FBARs). This is a MEMS device that uses aluminum nitride sandwiched between two metal layers. AlN is also used to build piezoelectric micromachined ultrasound transducers, which transmit and receive ultrasound, and can be used for aerial ranging at distances of up to one meter. Metallization methods allow AlN to be used in electronic applications similar to alumina and beryllium oxide. AlN nanotubes, as inorganic quasi-one-dimensional nanotubes, along with electrons such as carbon nanotubes, have been proposed as chemical sensors for toxic gases. Currently, there is a lot of research into the development of light-emitting diodes operating under UV light using gallium nitride-based semiconductors, and using aluminum gallium nitride alloys, wavelengths as short as 250 nm have been achieved. In 2006, low-efficiency AlN LED emission at 210 nm was reported.

Applications of AlN include

 Photoelectric,

 Dielectric layers in optical storage media,

 Electronic substrates, chip carriers that require high thermal conductivity,

 Military applications,

 As a crucible for growing GaAs crystals,

 Steel and semiconductor manufacturing.

Aluminum Nitride AlN Powder Price

The price of  aluminum nitride AlN powders will change randomly with the production cost, transportation cost, international situation, exchange rate, market supply and demand and other factors of aluminum nitride AlN powder. Tanki New Materials Co.,Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Aluminum Nitride AlN Powder, please feel free to send an inquiry to get the latest price of Aluminum Nitride AlN Particles.

Aluminum Nitride AlN Powder Supplier

As a global supplier of Aluminum Nitride AlN powders, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered 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.