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Vlastnosti keramiky z nitridu hliníku

Vlastnosti keramiky z nitridu hliníku

High-Temperature Stability and Thermal Shock Resistance of Typical Aluminum Nitride Ceramics

Typical aluminum nitride (AlN) ceramics can withstand temperatures up to 1000℃ without cracking due to rapid heating. The thermal shock resistance of standard AlN ceramics typically endures instantaneous temperature fluctuations of several hundred degrees Celsius.

AlN Rod

The Performance and Properties of Alumina Nitride, AlN :

Vlastnosti Hodnota
Slinovaná hustota 3.33 g/cm³
Absorpce vody 0.00%
Mez ohybu 285 MPa(20℃)
Poissonův poměr 0.21
Smykový modul 128 GPa
Modul pružnosti 310 GPa(20℃)
Průrazné napětí (Dielectric Breakdown) 16000 V( 1.00 mm )
Dielectric strength >= 13.3 kV/mm
@Thickness 1.50 mm
CTE, linear (300°C) 4.20 µm/m-°C
Měrná tepelná kapacita 0.738 J/g-°C
Dielectric Constant (1e+6 Hz) 9
Měrný objemový odpor 1.00e+13 ohm-cm
Dielektrický ztrátový činitel 0.00040
( 1e+6 Hz)
CTE, linear (1000°C) 5.60 µm/m-°C
Tepelná vodivost 180 W/m-K(20℃)
159 W/m-K(70℃)
Mez ohybu 300-400 MPa
Hardness, Vickers 1100-1200 Hv

Electronics and Semiconductor Applications:

In electronics packaging and semiconductor substrates, This Materials are widely utilized for thermal management and heat dissipation applications. These ceramics maintain stability within the temperature range of 200°C to 300°C. However, they can withstand higher instantaneous temperature variations, ensuring the reliability of electronic components and systems under thermal stress.

High-Temperature Mechanical Applications:

In high-temperature mechanical applications, such as heat exchangers and high-temperature insulators, it can operate effectively within the temperature range of 600°C to 1000°C. The specific tolerance to high temperatures also depends on mechanical stress and other operational conditions. These properties make AlN ceramics highly suitable for applications demanding robust performance under extreme thermal conditions.

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