ALN Ceramics

Aluminum nitride-boron nitride composite ceramics

In recent years, nitride ceramics have become a hot topic in materials science. Aluminum nitride (AlN) exhibits excellent thermal conductivity, with a single crystal thermal conductivity reaching 320 W/(m·K), along with low dielectric constant, low dielectric loss, high elastic modulus, and bending strength. Boron nitride (BN) features a low dielectric constant, low dielectric loss, good thermal shock resistance, and excellent machinability. By utilizing the principle of composite material performance stacking, combining aluminum nitride and boron nitride can yield AlN-BN composite ceramics with superior mechanical, dielectric, and thermal properties.

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Characteristics of Aluminum nitride-boron nitride composite ceramics

1. Ultra-high strength
2. High thermal conductivity
3. Thermal shock resistance
4. Easy processing
5. High surface quality

Processing method Composite ceramics Composite ceramics CNC processing surface（×500）

Data Sheet

Properties	Condition	Units	ANB-90
Density	— —	g/cm³	2.91
Thermal conductivity	25℃	W/m·K	90
Bending strength	3-point method,25℃	Mpa	300
Insulation	25℃	KV/mm	63
Volume resistity	25℃	Ω·cm	3.7×1015
Dielectric constant	1MHz	— —	6.6
Dielectric loss	1MHz	— —	9.8×10-4
CTE	25~400℃	×10-6/K	4.5

Application :

Aluminum nitride and boron nitride composite ceramics combine the excellent properties of both materials and have a wide range of applications. The main areas of application include:

Electronic Heat Dissipation: Used in high-power electronic devices and LEDs to enhance thermal conductivity and heat dissipation performance.
High-Temperature Environments: Utilized in high-temperature furnace linings and heat exchangers due to their high-temperature resistance and thermal shock resistance.
Mechanical Components: Employed in mechanical parts requiring high strength and wear resistance, such as cutting tools and abrasives.
High-Frequency Materials: Applied in high-frequency circuits and microwave devices because of their low dielectric loss and high electrical insulation properties.

Our advantage

Xiamen Juci Company has a plant area of 30,000 square meters, and the production workshop is equipped with 30 sets of single sintering furnaces, as well as 8 sets of advanced continuous sintering furnaces, with a production capacity of up to 1,000 tons/year of aluminum nitride powder. The testing center is about 800 square meters, equipped with more than 100 sets of professional powder and ceramics testing equipments such as scanning electron microscope, particle size meter, nitrogen-oxygen analyzer, powder comprehensive tester, thermal conductivity meter and so on. The company has a R&D center with an area of 1200 square meters, equipped with more than 40 sets of R&D special equipment, and a R&D team of more than 30 people who constantly promote product optimization and innovation, so that the company can maintain its competitive advantage in the fierce market competition.

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ALN Ceramics

Aluminum nitride-boron nitride composite ceramics