The aluminum nitride seal ring is made of precision ceramics, has the good sealing effect and insulation properties of the AlN ceramic ring, and can be used for high-frequency ceramic heat treatment.

Ceramic seal rings give full play to the high insulation, high strength, high-temperature resistance, aging resistance, corrosion resistance, and other characteristics of ceramic materials. It has good air tightness after metallization welding, has extremely high-temperature resistance, and can withstand rapid temperature changes. The mechanical strength is high and the dimensional tolerance of the seal is small, which greatly improves the service life and safety.

Aluminum Nitride Ceramic Parameter

Item

Unit

Value

Color

–

Grayish white, Beige

Water absorption

%

0

Volume Density

g/cm3

≥3.30

Surface roughness

um

0.2-0.85

Warpage

(length ‰)

≤2.5‰

Thermal conductivity

W/m.k

≥170

Thermal expansivity

x 10-6/°C (20℃-800℃)

4-6

Flexural strength

MPa

≥350

Modulus of elasticity

GPa

310-320

Dielectric constant

1MHZ, 25℃

8.9

Dielectric loss

x 10-4

4.6

Dielectric strength

KV/mm

≥15

Volume resistivity

Ω.cm

≥1014

Typical characteristic

-Very high thermal conductivity

-High insulation capacity

-Low dielectric constant, effective against electronic signal interference

-Low thermal expansion

-Good metallization capacity

-Expansion coefficient can be matched with semiconductor silicon wafer

-Better mechanical strength than alumina

-Good corrosion resistance to molten metal

-Minimum impurity content, non-toxic, high purity

Application of Aluminum Nitride Ceramics

It is widely used in high-end application fields such as HBLED, optical communications, IGBT, power devices, and TEC.

Packing

Our Aluminum Seal Ring is carefully handled to prevent damage during storage and transportation and to preserve the quality of our product in its original condition.