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Wholesale Advanced Aluminum Nitride Ceramics: High Thermal Conductivity from China Suppliers and Factory Manufacturers, Suppliers
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Wholesale Advanced Aluminum Nitride Ceramics: High Thermal Conductivity from China Suppliers and Factory Manufacturers, Suppliers
Aluminum Nitride (AlN) ceramics are cutting-edge materials known for their outstanding thermal conductivity, excellent electrical insulation, and minimal thermal expansion. These properties make AlN ceramics highly resistant to heat, corrosion, and wear, positioning them as an ideal choice for various applications. As leading suppliers from China, we specialize in manufacturing high-quality Aluminum Nitride ceramics that are widely used in electronics as heat sinks and substrates. Our products efficiently manage thermal loads in high-power devices, making them essential for semiconductor processing equipment, LED packaging, and high-temperature structural components. Choose our factory for innovative thermal management solutions tailored for advanced tech 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 electronic 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 away from active components, while its electrical insulation prevents short circuits and signal interference.
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 environments, making them ideal for electrostatic chucks, heater stages, and precision 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 high-frequency RF modules and high-power ICs, improving system performance and enabling 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
Values
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 (FAQ)
Q1
What makes aluminum nitride ceramics suitable for electronic applications?
Aluminum nitride (AlN) ceramics offer a rare combination of high thermal conductivity (up to 180 W/mK) and excellent electrical insulation (volume resistivity >10¹³ Ω cm at 25°C). This allows them to efficiently dissipate heat from electronic components while preventing electrical leakage, making them ideal for substrates, heat sinks, and packaging in power electronics and semiconductor devices.
Q2
How does AlN compare to other ceramic materials in terms of thermal conductivity?
AlN ceramics have a thermal conductivity of approximately 180 W/mK at 25°C, which is significantly higher than alumina (Al₂O₃) at around 30 W/mK. This makes AlN far superior for heat dissipation applications. However, it is worth noting that surface oxidation of AlN can form an alumina layer, which reduces local thermal conductivity, particularly in oxidizing environments above 700°C.
Q3
What are the key applications of aluminum nitride ceramics in semiconductor manufacturing?
In semiconductor manufacturing, AlN ceramics are used for wafer processing components including electrostatic chucks, heater stages, and precision fixtures. These parts require high dimensional stability, resistance to corrosive plasma environments, and reliable performance under extreme thermal and chemical stress — all properties that AlN ceramics reliably provide.
Q4
What is the maximum operating temperature for aluminum nitride ceramics?
The maximum operating temperature of AlN ceramics depends on the atmosphere. In oxidizing environments, surface oxidation begins around 700°C, forming a protective aluminum oxide layer. In inert atmospheres, AlN is protected up to approximately 1350°C. Bulk oxidation occurs above this temperature, so inert or vacuum environments are recommended for high-temperature applications.
Q5
Why is AlN used in RF and high-power module packaging?
AlN is preferred for RF and high-power module packaging because its high thermal conductivity efficiently removes heat generated by power-dense circuits, while its low dielectric loss tangent (5×10⁻⁴ at 1 MHz) and stable dielectric constant (8.6) minimize signal loss at high frequencies. This combination supports improved system performance, reliability, and enables miniaturization of advanced electronic devices.
Q6
What mechanical properties make AlN ceramics reliable in demanding environments?
AlN ceramics exhibit a compressive strength of 2100 MPa, a flexural strength of 335 MPa, and a Vickers hardness of 11 GPa, providing excellent structural integrity under mechanical stress. Additionally, a low coefficient of thermal expansion (3.6–5.6 × 10⁻⁶/°C across temperature ranges) and a thermal shock resistance of ΔT 400°C ensure dimensional stability and resistance to cracking in thermally cycled or high-stress environments.
