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Aluminum nitride ceramic rods (AlN) are high-performance structural components designed for applications requiring superior thermal conductivity, excellent electrical insulation, and exceptional mechanical durability. Manufactured using precision sintering and machining techniques, these ceramic rods provide outstanding thermal stability, low thermal expansion, and strong resistance to oxidation and wear. They are widely used in semiconductor processing, aerospace engineering, high-frequency electronic devices, power electronics, and advanced industrial applications where reliable thermal management is crucial.
Product Overview
Aluminum Nitride Ceramic Rod (AlN) is a ceramic material characterized by high hardness, wear resistance, excellent thermal conductivity, and outstanding high-temperature performance. With the characteristics of a covalent compound, its smooth surface is white or light gray, and it is non-toxic. AlN ceramic rods are widely used in high-temperature, high-pressure environments and applications requiring superior heat conduction. Thanks to their excellent mechanical properties and chemical stability, they find broad application in industries such as electronics, metallurgy, chemicals, and energy.
Features
- High Hardness and Wear Resistance: Aluminum Nitride ceramics have superior hardness compared to traditional alumina (Al₂O₃), making them ideal for use in areas subjected to high wear.
- Excellent High-Temperature Performance: AlN ceramics can withstand high temperatures and molten metal corrosion, making them suitable for high-temperature environments.
- Superior Thermal Conductivity: With excellent thermal conductivity, AlN enhances heat management performance, especially in high-temperature applications.
- Chemical Stability: AlN is resistant to acids and can be used in high-corrosion environments, though it is susceptible to alkaline solutions.
- Metalization Capability: AlN offers good metalization properties and can replace toxic beryllium oxide ceramics in the electronics industry.
Applications
- Metallurgical Industry: AlN ceramic rods are widely used in crucibles and casting molds for metals such as aluminum, copper, silver, and lead, thanks to their high-temperature resistance and molten metal corrosion resistance.
- Electronics Industry: With excellent thermal conductivity and metalization properties, AlN ceramic rods are used in high-frequency piezoelectric components, integrated circuit substrates, and other high-tech electronic devices.
- Chemical and Energy Industries: AlN ceramics are used as corrosion-resistant components in chemical plants and energy equipment, particularly in high-temperature and corrosive environments.
- Optical Applications: AlN ceramics' optical properties make them suitable for use in infrared windows and other optical applications.
- High-Temperature Equipment: Used in high-temperature turbines, corrosion-resistant components, GaAs crystal crucibles, aluminum evaporation dishes, and other high-temperature equipment.
| 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 |
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