Home >
Hot Products >
China High-Performance Aluminum Nitride Ceramics from China Suppliers - Advanced Thermal Management Solutions from Our Factory Suppliers, Factory
1 / 4
China High-Performance Aluminum Nitride Ceramics from China Suppliers - Advanced Thermal Management Solutions from Our Factory Suppliers, Factory
Aluminum Nitride (AlN) ceramics are high-performance materials produced by top manufacturers in China, known for their outstanding thermal conductivity and excellent electrical insulation properties. These ceramics exhibit low thermal expansion and provide strong resistance to heat, corrosion, and wear, making them ideal for various applications. As reliable suppliers of AlN ceramics, we cater to industries that require heat sinks and substrates in high-power electronic devices. Our products are essential for semiconductor processing equipment, LED packaging, and high-temperature structural components. Trust our factory to deliver the unique material properties needed for effective thermal management in advanced technology sectors
Material Overview｜Aluminum Nitride Ceramics for Advanced Electronics
⚡AlN ceramics offer a rare combination of high thermal conductivity and excellent electrical insulation, making them a top choice 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 in high-power electronics, LED modules, and laser diodes — extending device service life significantly.
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 essential for electrostatic chucks, heater stages, and precision semiconductor 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 (FAQ)
Q
What makes aluminum nitride (AlN) ceramics suitable for electronic applications?
A
AlN ceramics combine exceptionally high thermal conductivity (up to 180 W/mK) with excellent electrical insulation, allowing them to efficiently dissipate heat from electronic components while preventing electrical interference. This unique combination, along with their mechanical strength and resistance to high temperatures and corrosive environments, makes them ideal for advanced electronic and semiconductor applications.
Q
How does AlN thermal conductivity compare to other ceramic materials?
A
AlN ceramics offer a thermal conductivity of approximately 180 W/mK at 25°C, which is significantly higher than common alternatives such as alumina (~30 W/mK) or standard zirconia. This makes AlN one of the best electrically insulating ceramic materials for heat dissipation in high-power electronic systems.
Q
What are the main applications of aluminum nitride ceramics in semiconductor manufacturing?
A
In semiconductor manufacturing, AlN ceramics are used for wafer processing components including electrostatic chucks, heater stages, and precision fixtures. These components require dimensional stability, cleanliness, and reliable performance under extreme thermal and chemical stress conditions — all of which AlN ceramics are well-suited to provide.
Q
What is the maximum operating temperature for AlN ceramics?
A
The maximum operating temperature depends on the atmosphere. In oxidizing environments, surface oxidation begins around 700°C, forming an aluminum oxide layer that affects thermal conductivity. In inert atmospheres, AlN can be reliably used up to approximately 1300–1350°C before bulk oxidation occurs.
Q
Why is AlN used in high-power and RF module packaging?
A
AlN is an excellent choice for high-power and RF module packaging because it combines high thermal conductivity with strong electrical insulation. This supports efficient thermal management while protecting sensitive circuits from electrical interference. AlN-based packages help improve system performance, reliability, and enable miniaturization in advanced electronic devices operating at high frequencies and power levels.
Q
What are the key electrical properties of AlN ceramics?
A
AlN ceramics exhibit a dielectric constant of 8.6 at 1 MHz, a very low loss tangent of 5×10⁻⁴, a dielectric strength greater than 15 kV/mm, and a volume resistivity exceeding 10¹³ Ω·cm at room temperature. These properties confirm AlN as an outstanding electrical insulator, even at elevated temperatures, making it well-suited for high-frequency and high-voltage electronic applications.
