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Aluminum nitride powder (AlN) is a high-performance ceramic material engineered for applications requiring superior thermal conductivity, excellent electrical insulation, and outstanding mechanical stability. Manufactured through controlled synthesis and precision refinement processes, this powder exhibits high purity, minimal thermal expansion, and exceptional chemical resistance. It is widely used in semiconductor processing, electronic substrates, thermal management systems, aerospace engineering, and high-performance industrial applications where heat dissipation and electrical insulation are critical.
Product Overview
Aluminum Nitride (AlN) Powder is a high-purity ceramic powder known for its excellent thermal conductivity, electrical properties, and mechanical strength. It is primarily used in the manufacturing of high-thermal-conductivity aluminum nitride ceramic substrates and other high-performance ceramic materials. The powder appears gray or light gray and has a true density of 3.26 g/cm³. It is widely utilized in various industrial fields, including electronics, metallurgy, and energy.
Features
- High Thermal Conductivity: AlN powder has outstanding thermal conductivity, making it ideal for producing high-conductivity materials, particularly for thermal management in electronic devices and high-temperature environments.
- High Hardness: AlN's hardness exceeds that of traditional alumina (Al₂O₃), making it an excellent wear-resistant ceramic material, particularly for parts exposed to severe wear.
- Good Chemical Stability: AlN exhibits strong resistance to heat and molten metal erosion, stable in acidic environments but susceptible to attack in alkaline solutions.
- Metalization Capability: AlN powder has excellent metalization properties, enabling it to replace toxic beryllium oxide ceramics in the electronics industry.
- Excellent Optical Properties: AlN's optical properties make it suitable for the production of infrared windows and other optical components.
Applications
- Electronics Industry: Used in the production of high-thermal-conductivity aluminum nitride ceramic substrates, widely applied in integrated circuit substrates, high-frequency piezoelectric components, and other electronic devices.
- Metallurgical Industry: AlN powder is used to produce crucibles and casting molds for metals such as aluminum, copper, silver, and lead, thanks to its resistance to high temperatures and molten metal.
- High-Temperature Equipment: Used in components for high-temperature environments such as turbine machines, GaAs crystal crucibles, and aluminum evaporation dishes, offering excellent resistance to corrosion and high heat.
- Optical Applications: Due to its optical properties, AlN powder is suitable for the manufacture of infrared windows and other optical materials.
- Thermal Management: As a high-conductivity material, AlN powder plays a crucial role in thermal management systems, especially in devices requiring efficient heat dissipation.
| Property Content | Property Index |
| Density | ≥ 3.30 g/cm³ |
| Water Absorption | 0 |
| Thermal Conductivity [20℃] | ≥ 170 W/m·K |
| Linear Expansion Coefficient [RT-400℃] | 4.4 × 10⁻⁶/℃ |
| Flexural Strength | ≥ 330 MPa |
| Bulk Resistance | ≥ 10¹⁴ Ω·cm |
| Dielectric Constant [1MHz] | 9 |
| Dissipation Factor [1MHz] | 3 × 10⁻⁴ |
| Dielectric Strength | ≥ 15 KV/mm |
| Surface Roughness Ra | 0.3 ~ 0.5 µm |
| Warping | 0.03 ~ 0.05 % (length / 25.4) |
| Appearance | Dense, Fine-grained |
