What is Aluminum Nitride AlN Powder Used For?

Guotai Junan released a research report saying that under the background of carbon neutrality, the scarcity of coal mines is prominent, and the value of assets will continue to increase. The high point of capital expenditure in the coal industry appeared in 2012. Under the general direction of carbon neutrality, the overall investment in the industry has slowed down, and capital expenditure has gradually declined. From 2021 to now, the Energy Bureau of the National Development and Reform Commission has only newly approved 17.4 million tons of AlN powder.

Introduction to Aluminum Nitride AlN Powder
Aluminum nitride is a covalent bond compound. The chemical formula is AIN. It is an atomic crystal, belongs to the diamond-like nitride, hexagonal crystal system, has a wurtzite type crystal structure, non-toxic, white or off-white.
 

Aluminum Nitride AlN powder CAS 24304-00-5

 

Applications of Aluminum Nitride AlN Powder
 
1. Piezoelectric device application
Aluminum nitride has high resistivity, high thermal conductivity (8-10 times of Al2O3), and low expansion coefficient similar to silicon, making it an ideal material for high temperature and high-power electronic devices.
 
2. Electronic packaging substrate material
Commonly used ceramic substrate materials are beryllium oxide, alumina, aluminum nitride, etc., among which alumina ceramic substrate thermal conductivity is low, thermal expansion coefficient and silicon do not match. Although beryllium oxide has excellent properties, its powder is highly toxic. 
In the existing ceramic materials that can be used as substrate materials, silicon nitride ceramic has the highest bending strength, good wear resistance, the best comprehensive mechanical properties of ceramic materials, and its thermal expansion coefficient is the smallest. And aluminum nitride ceramics have high thermal conductivity, good thermal impact resistance, and still have good mechanical properties at high temperatures. It can be said that aluminum nitride and silicon nitride are the most suitable materials for electronic packaging substrates from the point of view of performance, but they also have a common problem is that the price is too high.
 
3. Applied to luminous materials 
Aluminum nitride has a maximum direct bandgap width of 6.2eV, which has a higher photoelectric conversion efficiency than indirect bandgap semiconductors. As an important blue and ultraviolet luminescent material, AlN is used for ultraviolet or deep-ultraviolet light-emitting diodes, ultraviolet laser diodes, and ultraviolet detectors. In addition, AlN can form continuous solid solutions with group III nitride compounds such as GaN and InN, and its three or four-element alloys can achieve a continuously tunable bandgap from visible band to deep ultraviolet band, making it an important high-performance luminescent material.
 
4. Applied to the substrate materials
AlN crystals are ideal substrates for GaN, AlGaN, and AlN epitaxial materials. Compared with sapphire or SiC substrates, AlN has higher thermal matching and chemical compatibility with GaN and lower stress between the substrate and the epitaxial layer. Therefore, AlN crystal as GaN epitaxial substrate can greatly reduce the defect density in the device, improve the performance of the device, and has a good application prospect in the preparation of high temperature, high frequency, high power electronic devices. 
In addition, the substrate of AlGaN epitaxial material with AlN crystal as a high Al component can effectively reduce the defect density in the nitride epitaxial layer, and greatly improve the performance and service life of nitride semiconductor devices. High quality daily blind detector based on AlGaN has been successfully applied.
 
5. Used for ceramics and refractory materials
Aluminum nitride can be used in the sintering of structural ceramics. The prepared aluminum nitride ceramics have good mechanical properties, higher flexural strength than Al2O3 and BeO ceramics, and high-temperature resistance and corrosion resistance. AlN ceramics can be used to make crucible, Al evaporating dish, and other high-temperature corrosion-resistant parts. In addition, pure AlN ceramics are colorless transparent crystals with excellent optical properties, which can be used as heat-resistant coatings for high-temperature infrared windows and fairings of transparent ceramics manufacturing electronic optical devices.
 
6. Composite materials
As a packaging material, epoxy resin/AlN composite materials need good thermal conductivity and heat dissipation, and this requirement is becoming more and more stringent. Epoxy resin as a kind of polymer material with good chemical properties and mechanical stability, it is easy to cure, has low shrinkage, and has low thermal conductivity.  By adding AlN nanoparticles with excellent thermal conductivity into epoxy resin, the thermal conductivity and strength of the material can be effectively improved.

Main Supplier of Aluminum Nitride AlN Powder
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality Aluminum Nitride AlN Powder, please feel free to contact us and send an inquiry. ([email protected])
 

Recently, the first press conference of the Boao Forum For Asia Annual Conference 2022 was held. Two flagship reports were released at the conference: "Asia's Economic Prospects and Integration Process 2022" and "Sustainable Asia and the World 2022-Green Transformation in Action in Asia".

The flagship report points out that the global economy will recover in 2021, and the pace of economic integration in the Asia-Pacific has not stopped even in the face of the impact of COVID-19. The Asia-Pacific region has provided new impetus for the world's economic recovery and institutional building.  

The report gives an outlook on the Asian economy, noting that a number of factors will affect Asian economic growth. For example, mutated strains such as Delta and Omicron have become more transmissible, and many economies are experiencing epidemic peaks again. The Ukraine crisis has triggered geopolitical changes in Asia and Europe, leading to higher commodity prices, which may affect the global energy supply and energy transformation.

The report pointed out that the Asian economy will still be in the process of recovery in 2022, but the growth rate may moderate. According to the report, Asia's economic growth in 2022 is likely to be lower than the current IMF forecast, which is projected at 4.8%.

Affected by several factors, the supply of the AlN powder is erratic and thus its prices are expected to go higher in the future.

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