Tag: aluminum nitride

Hardness of Aluminum Nitride Ceramics

What is Aluminum Nitride Ceramic?

Aluminum nitride clays are ceramics containing aluminum nitride, (AIN), as the main crystal phase. Aluminum nitride is a main raw material to produce high thermal conductivity aluminum-nitride ceramic substrates. It has high purity, small particles, and high activity.

Aluminum Nitride Ceramics’ Hardness

Aluminum nitride ceramics have become more widely used with the advances in science and technology. Aluminum nitride ceramics have many applications in today’s world, including aerospace, electronics, semiconductors, and other areas. Aluminum nitride cermics exhibit high strength, hardness and wear resistance. Aluminum nitride clays have a hardness second only to diamond.

Aluminum nitride is a key structural ceramic material. Its chemical formula is ALN. It is superhard and resists wear and oxidation at elevated temperatures. Aluminum nitride ceramics are possible to be made under normal pressure.

First of all, aluminum nitride cermics rank fourth in organic materials after diamond, cubic boron, and boron carbide. Hot-pressing sintering is the best way to obtain high-density aluminium nitride. It has excellent strength and oxidation resistance and can be maintained in place under high temperatures. It can be used for turbine blades in high-temperature, gas turbines. It can be used for wear-resistant sealing and can also be used in heating plates to heat silicon wafers in semiconductor manufacturing.

Aluminum nitride ceramics have a high hardness, making them difficult to process. If the equipment and technology required to process it are not available, it will be difficult. Every step of the process is vital. Material can be scrapped if it lacks craftsmanship.

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What is Aluminum Nitride Ceramic? Aluminum nitride clays are ceramics containing aluminum nitride, (AIN), as the main crystal phase. Aluminum nitride is a main raw […]

Study on nano aluminum nitride in thermal conductive plastics

What is aluminum Nitride? Aluminum nitride AIN crystal exhibits a wurtzite structure and is a hexagonal system that contains a tetrahedral-covalent bond compound. Chemical composition AI 65.81% and N 34.19%. Specific gravity 3.261g/cm3, white/grayish white, single crystal transparent. Sublimation temperature is 2450 under atmospheric tension. It is a heat and high temperature resistant material. Aluminum nitride can resist molten aluminium, other molten metallics, and gallium arsenide.
Performance index for aluminum nitride
(1) The thermal conductivity is high (approximately 320W/m*K), which is close to SiC. It is more than 5 times higher than Al2O3
(2) Matching the thermal expansion coefficient (4.5×10-6), Si (3.54×10-6), and GaAs (6×10-6).
(3) various electrical properties (dielectric constant, dielectric loss, body resistivity, dielectric strength) excellent;
(4) The mechanical properties of BeO and Al2O3 ceramics are superior to their flexural strength. They can also be atmospheric sintered.
(5) Excellent optical transmission properties;
(6) non-toxic.

Application to nano aluminum nitride within thermal conductive materials
1 Thermally conductive Silica Gel and 1 Thermally conductive Epoxy resin
Nano AlN composite silica Gel with high thermal conductivity is extremely efficient. It has excellent thermal conductivity, good insulation, low consistency, and good construction performance. These products can replace or exceed imported products and are used extensively in electronic devices heat transfer medium to improve work efficiency. For example, CPU and radiator filling gap. High power transistor, silicon controlled component, diodes, and substrate in contact the thin seam heat exchange medium. Nano thermal paste is used to close the gap between IC/audion and heatsink, increase their contact area, and achieve better heat dissipation.

2, thermal conductive plastics application:
Powders of nano aluminum nitride can significantly improve the thermal conductivity. By adding the experimental product to plastic in a 5-10% ratio, the plastic’s thermal conductivity can be increased from 0.33 to 5. Thermal conductivity rose by 16 times. The thermal conductivity additive on the market today has more advantages than this one. It can be used to improve the mechanical properties and the thermal conductivity effect, as well as reduce the amount of thermal conductivity filler. Current nano aluminum Nitride powders have been purchased by relevant manufacturers on a large scale. Then, new nano thermally conductive plastics will go on the market.

3. Other areas of application:
Nano aluminum is used for smelting nonferrous metal and semiconductor galium arsenide.

Tech Co., Ltd. is a professional supplier for nitride products. We have over 12 years of experience in chemical product development and research. We accept payments via Paypal, T/T or Credit Card. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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What is aluminum Nitride? Aluminum nitride AIN crystal exhibits a wurtzite structure and is a hexagonal system that contains a tetrahedral-covalent bond compound. Chemical composition […]

What are Aluminum Nitride Characteristics?

History of Aluminum Nitride Aluminium nitride A type of ceramic material, has a very high comprehensive performance and 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 application over the next 100 years. 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, pure iron, and aluminum alloys. 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 and light-duty integration. They also have a development direction such as high reliability, high power output, more complex heat dissipation devices to the substrate and packaging materials that are more requested, which will further encourage the growth of the aluminum industry.

Aluminum Nitride Characteristics
Structure
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.

Performance
Aluminum nitride is far more efficient than alumina because it has superior performance in terms of strength, volume resistance, insulation and pressure resistance.

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. The principal mechanism of heat transfer through the lattice is heat vibration or lattice vibrating, which is, by thermal wave or lattice 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 through mutual restriction of and coordination among vibrations between structural elements (atoms or ions) If the crystal has a non-elastic structure, heat can flow freely from one end to the other without interference or scattering. The thermal conductivity can even reach very high levels. 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
Price is affected by many factors, including supply and demand, market trends, economic activity and unexpected events.
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Aluminum Nitride Supplier
Technology Co. Ltd. is a trusted global supplier of chemical material and manufacturer. They have over 12 years experience in producing super-high-quality chemicals, Nanomaterials, such as silicon powder.
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History of Aluminum Nitride Aluminium nitride A type of ceramic material, has a very high comprehensive performance and can be traced back over 100 years. […]

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