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China High-Quality Aluminum Nitride Ceramics from China Suppliers and Factory for Advanced Thermal Management Applications Manufacturer, Factory
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China High-Quality Aluminum Nitride Ceramics from China Suppliers and Factory for Advanced Thermal Management Applications Manufacturer, Factory
Aluminum Nitride (AlN) ceramics are cutting-edge materials renowned for their outstanding thermal conductivity, excellent electrical insulation, and low thermal expansion. These advanced ceramics are highly resistant to heat, corrosion, and wear, making them ideal for various applications in the tech industry. As a leading supplier and factory in China, we provide AlN ceramics that are extensively used as heat sinks and substrates in electronics, effectively managing thermal loads in high-power devices. Additionally, our Aluminum Nitride products are essential for semiconductor processing equipment, LED packaging, and high-temperature structural components. Our unique blend of properties ensures optimal thermal management for innovative technologies. Choose us for reliable AlN ceramics tailored to meet the demands of modern industries
Material Overview｜Aluminum Nitride Ceramics for Advanced Electronics
AlN ceramics combine exceptional thermal conductivity with excellent electrical insulation — a unique pairing ideal for advanced electronics and semiconductor applications.
Aluminum nitride (AlN) ceramics are high-performance technical ceramic materials widely recognized for their exceptional thermal conductivity combined with excellent electrical insulation. This unique combination allows AlN to efficiently dissipate heat while maintaining electrical isolation, making it an ideal solution for advanced electronic and semiconductor applications. In addition, AlN ceramics exhibit good mechanical strength, low thermal expansion, and strong resistance to high temperatures and corrosive environments, ensuring stable performance in demanding operating conditions.
Thermal Management｜Electronic Substrates and Heat Sinks
AlN's high thermal conductivity enables rapid heat transfer, while its electrical insulation prevents short circuits — critical for power electronics, LEDs, and laser diodes.
One of the most important applications of AlN ceramics is in electronic substrates and heat sinks. In high-power electronic devices, LED modules, and laser diodes, effective heat dissipation is critical to maintaining performance and extending service life. AlN's high thermal conductivity enables rapid heat transfer away from active components, while its excellent electrical insulation prevents short circuits and signal interference. As a result, AlN substrates and heat sinks are widely used in power electronics, optoelectronics, and high-density integrated systems.
AlN ceramics withstand high temperatures and corrosive plasma, making them essential for electrostatic chucks, heater stages, and precision wafer processing fixtures.
Aluminum nitride ceramics also play a crucial role in semiconductor manufacturing. Their ability to withstand high temperatures and resist corrosive plasma environments makes them suitable for wafer processing components such as electrostatic chucks, heater stages, and other precision fixtures. These components must maintain dimensional stability, cleanliness, and reliability under extreme thermal and chemical stress, all of which are effectively provided by AlN ceramics.
Advanced Packaging｜High-Power and RF Modules
AlN-based packages support efficient thermal management for RF and high-power ICs, enabling improved system performance, reliability, and miniaturization.
In addition, AlN is extensively used in packaging for high-power and radio frequency (RF) modules. Its combination of high thermal conductivity and electrical insulation supports efficient thermal management while protecting sensitive circuits. AlN-based packages and substrates are therefore ideal for high-frequency RF modules and high-power integrated circuits, helping to improve system performance, reliability, and miniaturization in advanced electronic devices.
Specification for Aluminum Nitride Ceramics
Properties
Units
Value
Color
Grey
Mechanical Properties
Density
g/cm³
3.31
Modulus of Elasticity
GPa
310
Fracture Toughness
MPa × m^1/2
3.5
Poisson's Ratio
0.25
Compressive Strength
MPa
2100
Flexural Strength
MPa
335
Hardness (Knoop 100 g)
Kg/mm²
1170
Hardness (Vickers)
GPa
11
Thermal Properties
Maximum Temperature *
— Oxidizing
°C
700
— Inert
°C
1300
Thermal Conductivity
— @ 25°C
W/mK
180
— @ 300°C
W/mK
130
Specific Heat
J/kg.K
750
Thermal Shock Resistance ΔT
°C
400
Coefficient of Thermal Expansion
— CTE 25°C → 100°C
10⁻⁶/°C
3.6
— CTE 25°C → 300°C
10⁻⁶/°C
4.6
— CTE 25°C → 500°C
10⁻⁶/°C
5.2
— CTE 25°C → 1000°C
10⁻⁶/°C
5.6
Electrical Properties
Dielectric Constant
1 MHz
8.6
Loss Tangent
1 MHz
5×10⁻⁴
Dielectric Strength
kV/mm
>15
Volume Resistivity
— 25°C
Ω cm
>10¹³
— 300°C
Ω cm
10⁹
— 500°C
Ω cm
10⁷
* Note: Aluminum Nitride is susceptible to surface oxidization. When this happens, a layer of Aluminum Oxide forms. This does help to protect the material, however, it impacts the thermal conductivity (Alumina is ~30 W/m.K). In oxidizing atmospheres, this happens around 700°C. In inert atmospheres this layer protects the AlN up to ~1350°C. Bulk oxidation will occur at temperatures above this.
Frequently Asked Questions
Q
What makes aluminum nitride ceramics different from other ceramic materials?
Aluminum nitride (AlN) ceramics stand out due to their unique combination of very high thermal conductivity (up to 180 W/mK) and excellent electrical insulation. Most ceramics that conduct heat well also tend to conduct electricity, but AlN provides both properties simultaneously, making it particularly valuable in electronics and semiconductor applications where heat must be removed without compromising electrical isolation.
Q
What is the thermal conductivity of aluminum nitride ceramics?
AlN ceramics exhibit a thermal conductivity of approximately 180 W/mK at 25°C, which decreases to around 130 W/mK at 300°C. This is significantly higher than most other electrically insulating ceramics such as alumina (~30 W/mK), making AlN a preferred choice for demanding thermal management applications in power electronics and LED systems.
Q
What are the main applications of aluminum nitride ceramics in electronics?
AlN ceramics are widely used in electronic substrates and heat sinks for high-power devices, LED modules, and laser diodes. They are also used in semiconductor manufacturing as wafer processing components — including electrostatic chucks and heater stages — as well as in packaging for high-power and RF modules, where efficient thermal management and electrical insulation are both essential.
Q
How does aluminum nitride perform at high temperatures?
AlN ceramics can operate up to approximately 700°C in oxidizing atmospheres before surface oxidation begins to form an aluminum oxide layer. In inert atmospheres, this protective oxide layer allows AlN to perform reliably up to around 1350°C. Above this temperature, bulk oxidation may occur. The material also exhibits good thermal shock resistance with a ΔT of 400°C, supporting use in environments with rapid temperature changes.
Q
What are the electrical insulation properties of AlN ceramics?
AlN ceramics offer excellent electrical insulation with a volume resistivity greater than 10¹³ Ω·cm at room temperature (25°C), a dielectric strength of over 15 kV/mm, and a dielectric constant of 8.6 at 1 MHz. These properties ensure reliable electrical isolation even in high-power and high-frequency applications, preventing current leakage and signal interference.
Q
Is aluminum nitride ceramic suitable for semiconductor wafer processing?
Yes, AlN ceramics are highly suitable for semiconductor wafer processing environments. Their resistance to corrosive plasma, dimensional stability under extreme thermal stress, and high purity make them ideal for precision components such as electrostatic chucks and heater stages. These characteristics ensure consistent performance, cleanliness, and reliability throughout the demanding conditions of semiconductor fabrication processes.
