Aluminum nitride is a refractory composite ceramic material with a hexagonal wurtzite structure. Pure aluminum nitride appears blue whiteag百家乐回血, while aluminum nitride ceramics typically appear gray or white.

Aluminum nitride is stable at high temperatures in an inert atmosphere and melts at 2800 ° C. It has high thermal conductivity and good electrical insulation performance, as well as low dielectric constant and dielectric loss. The combination of these characteristics makes it a key advanced material for many applications such as optics, lighting, electronics, and renewable energy.

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Aluminum nitride structure

Aluminum nitride has a hexagonal crystal structure and is a covalent bonding material. The commonly used methods for preparing aluminum nitride include direct nitridation, carbon thermal reduction,ag百家乐三路实战 high-energy ball milling, high-temperature self propagating synthesis, chemical vapor deposition, etc.

Advantages of aluminum nitride

1. Very high thermal conductivity (>170 W/mK)

2. High electrical insulation capacity (>1.1012 Ω cm)

3. According to the double ring method, the strength is greater than 320 MPa (biaxial strength)

4. Low thermal expansion 4 to 6 × 10-6K-1 (20 to 1000 ° C)

5. Good metalization ability

Application of Aluminum Nitride

1. Optoelectronics;

2. Dielectric layer in optical storage media;

3. Electronic substrate, an essential chip carrier with high thermal conductivity;

4. Military applications.ag百家乐回血

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