AlN Ceramic (AlN), Aluminum Nitride Ceramic

Aluminum nitride (AlN) ceramics exhibit high thermal conductivity, a thermal expansion coefficient compatible with silicon, low dielectric constant, and low dielectric loss. They also possess a high melting point, high hardness, and excellent insulation properties. Common applications include heat dissipation substrates, ceramic nozzles, and electrostatic chucks. As a covalent compound with a high melting point, aluminum nitride's low self-diffusion coefficient makes complete sintering of high-purity AlN powder at conventional temperatures challenging, leading to insufficient density and affecting thermal conductivity. Our company utilizes extensive experience in ceramic material preparation to provide aluminum nitride granulated powder with uniform particle morphology and good flowability, enhancing density and uniformity during sintering, thus improving the mechanical strength and thermal conductivity of the final ceramic products.
Specifications and dimensions: Processing can be customized based on drawings or samples.

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Main Products

Customized Processing of Ceramic Nozzles

Ceramic Disc

Aluminum Nitride Ceramic Ring

Aluminum Nitride Vacuum Chuck

Features

Aluminum nitride (AlN) ceramics are inorganic non-metallic materials primarily composed of aluminum nitride as the main crystalline phase. The key characteristic of aluminum nitride ceramics is their excellent thermal conductivity, which is significantly higher than that of traditional ceramics such as alumina. This property allows for effective heat dissipation from electronic components, maintaining the stability of the equipment. Additionally, aluminum nitride ceramics exhibit good electrical insulation, mechanical strength, low dielectric constant and dielectric loss, stable chemical properties, non-toxicity, high-temperature resistance, and a low coefficient of thermal expansion.

High thermal conductivity
Low expansion coefficient
Excellent electrical properties (dielectric constant, dielectric loss, bulk resistivity, dielectric strength).
Good mechanical properties

Good optical transmission characteristics
Non-toxic
High hardness
Resistant to heat and molten metal

Aluminum Nitride Properties

Material Matrix			Aluminum Nitride
Properties	Item	Unit	AN100A	AN180
Physical Property	Content	%	-	-
	Colour		Milky White	Greyish White
	Density	g/cm³	3.2	3.3
Mechanical Behavior	Vickers Hardness	GPa	11.2	10.5
	Bending Strength	Mpa	220	320
	Compressive Strength	Mpa	450	-
	Young's Modulus	GPa	310	320
	Poisson's Ratio	/	0.24	0.24
	Fracture Toughness	Mpa.m^1/2	3.2	3.3
Thermal Property	Coefficient of Thermal Expansion	10^-6/°C	4.6	4.6
	Thermal Conductivity	W/(m.K)	120	180
	Specific Heat Capacity	J/(g.K)	0.72	0.72
	Maximum Operating Temperature	°C	800	800
Electrical Property	Dielectric Strength	kv/mm	16	16
	Dielectric Constant (1MHz)	-	8.5	8.6
	Dielectric Losses (1MHz)	(X10^-4)	2	3
	Volume Resistivity 20℃	Ω.cm	>10¹⁴	>10¹⁴
	Volume Resistivity 300℃	Ω.cm	10¹¹	10¹⁰

* The listed property values are average results obtained from test samples and are not guaranteed. Please be aware that these values may vary for specific production batches.

Aluminum Nitride Applications in Various Industries

Thermal Management Materials: Aluminum nitride possesses extremely high thermal conductivity, making it an ideal material for heat dissipation. It is widely used in heat sinks for electronic devices such as computer CPUs and in thermal substrates for power amplifier modules.
Electronic Packaging Materials: Aluminum nitride can be used to encapsulate semiconductor devices, helping to protect chips from external environmental interference while effectively dissipating heat.
Ceramic Substrates: It can serve as a carrier for various electronic components, utilized in the manufacturing of multilayer ceramic capacitors, thick-film circuits, and more.
Electronics Industry: In the manufacturing process of electronic chips, aluminum nitride ceramic nozzles are employed in applications such as photoresist spraying and electronic cleaning fluid spraying. Their high thermal conductivity and electrical insulation properties ensure precise spraying and the safety of the equipment.