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Ceramica al nitruro di alluminio

Ceramica al nitruro di alluminio

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 :

Proprietà Valore
Densità sinterizzata 3.33 g/cm³
Assorbimento dell'acqua 0.00%
Resistenza alla flessione 285 MPa(20℃)
Rapporto Poissons 0.21
Modulo di taglio 128 GPa
Modulo di elasticità 310 GPa(20℃)
Guasto dielettrico 16000 V( 1.00 mm )
Dielectric strength >= 13.3 kV/mm
@Thickness 1.50 mm
CTE, linear (300°C) 4.20 µm/m-°C
Capacità termica specifica 0.738 J/g-°C
Dielectric Constant (1e+6 Hz) 9
Resistività di volume 1.00e+13 ohm-cm
Indice di perdita dielettrica 0.00040
( 1e+6 Hz)
CTE, linear (1000°C) 5.60 µm/m-°C
Conduttività termica 180 W/m-K(20℃)
159 W/m-K(70℃)
Resistenza alla flessione 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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