Product performance and production application of spherical aluminum nitride AlN particles

Product performance of spherical aluminum nitride AlN particles

Spherical aluminum nitride AlN particles (CAS 24304-00-5) have high purity, ultra-fine particle size, and high surface activity. The powder is treated by surface cloth, with low oxygen content and obvious insulation and thermal conductivity.

How are spherical aluminum nitride AlN particles produced?

The invention relates to a method for preparing high-purity quasi-spherical aluminum nitride particles, including the following steps

(1) Wet Al2O3 powder, soluble inorganic salt and water-soluble organic precursor are mixed with the above raw materials according to the mass ratio, and water is added, ball milling, and spray granulation to obtain micron-sized spherical particles

(2) Micron-sized spherical particles are placed in a nitrogen atmosphere for microwave synthesis. The synthesis process is divided into two stages: the first stage: use a temperature rise rate of 0.1 5°Cmin to rise from room temperature to 800 1200°C, and heat preservation; The second stage: use a rate of 120°Cmin to heat up to 1200-1800°C, keep it warm, and contain a small amount of carbon nano-aluminum nitride particles.

(3) Decarburizing nano aluminum nitride particles containing trace carbon in a CO2 atmosphere to obtain high-purity spherical nano aluminum nitride particles.

Overview of spherical aluminum nitride AlN particles

Spherical aluminum nitride is a kind of high thermal conductivity material of inorganic powder. Because of its high thermal conductivity, good insulation, low dielectric constant, as well as the considerable expansion coefficient and excellent comprehensive performance of silicon materials, it is more and more popular. Attention, widely used in the fields of large-scale integrated circuits, electronic substrates, high thermal conductivity, thermal conductivity inorganic fillers, high-performance structural ceramics and other fields.

With the advent of the 5G era, various electronic devices are becoming more integrated and more powerful. In order to improve the heat dissipation performance of various packaging 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 choices. In order to increase the filling amount, the powder is required to be dense and spherical, with a particle size ranging from tens of microns to hundreds of microns, to ensure that the size and particle size of the composite can achieve high filling and good fluidity.

Application of spherical aluminum nitride AlN particles

1. Manufacturing of high-performance ceramic devices: manufacturing integrated electrical circuit substrates, electronic devices, optical devices, radiators, high-temperature crucibles

2. Preparation of metal and polymer matrix composite materials: especially in high-temperature sealants and electronic packaging materials with good application prospects.

3. Nano-inorganic ceramic automotive lubricants and anti-wear agents. Nano-ceramic aluminum nitride ceramic nanoparticles are used as lubricants on the metal surface of the friction pair in the engine. They are activated under the action of high temperature and extreme pressure, and are embedded with strong permeability. In the depressions and pores of the metal surface, the damaged surface is repaired and nano-ceramic coating is formed. Due to the isolation of this film, the friction is greatly reduced, and the friction between the moving parts is reduced to almost zero. Although the price of nano aluminum nitride powder is expensive, the addition amount in lubricating oil is only two ten thousandths, and the cost performance is very high.

4. Used in the manufacture of thermally conductive silica gel and thermally conductive epoxy resin. Ultra-high thermal conductivity nano aluminum nitride composite silica gel has good thermal conductivity, good electrical insulation, wide electrical insulation temperature， low consistency, and good construction performance. It is widely used in the gap between the CPU and the heat sink, high-power transistors, thyristor components, diodes, and the heat transfer medium at the thin joints in contact with the substrate.

5. The application of aluminum nitride powder in high thermal conductivity silicone rubber: the bottom aluminum and silicon nitride have good matching performance and are easy to disperse in the rubber. It can greatly improve the thermal conductivity of silicone rubber without affecting the mechanical properties of the rubber. For example, the viscosity of oxide increases rapidly during the process of adding，

6. Other application areas: Nano-aluminum nitride is used in smelting non-ferrous metals and semiconductor gallium arsenide crucibles, evaporation boats, thermocouple protection tubes, high-temperature insulation parts, microwave dielectric ceramic materials, high-temperature corrosion-resistant structures, etc. Microwave transparency Aluminum nitride ceramic products, currently used in PI resin, thermal insulation mica tape, thermal grease, insulating paint, thermal oil, etc.

Price of spherical aluminum nitride AlN particles

The price of spherical aluminum nitride AlN particles varies randomly with factors such as production cost, transportation cost, international situation, exchange rate, and market supply and demand of spherical aluminum nitride AlN particles. 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 spherical aluminum nitride AlN particles, please feel free to contact me to get the latest price of spherical aluminum nitride AlN particles.

Supplier of spherical aluminum nitride AlN particles

As a global supplier of spherical aluminum nitride AlN particles, Tanki New Materials Co. Ltd has extensive experience in the performance, application and cost-effective manufacturing of advanced and 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 provide OEM services.

Chemical Composition of Spherical Aluminum Nitride AlN Granule