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    Al?O? precision alumina ceramic substrate

    Alumina ceramic substrate has good insulation, heat insulation and wear resistance. Because of its relatively low price and balanced comprehensive performance, it is one of the most widely used ceramic materials.
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    Alumina ceramic substrate has good insulation, heat insulation and wear resistance. Because of its relatively low price and balanced performance, it is one of the most widely used ceramic materials. High-purity (99.5% and above) alumina has good corrosion resistance and plasma etching resistance, and is widely used in pan-semiconductor equipment.

     

    主要特征:                                                    

    Insulation, heat insulation, wear resistance, corrosion resistance, plasma etching resistance.

     

    主要應用:

    Pan-semiconductor equipment (LCD and LED manufacturing equipment) spare parts, insulation parts, wear parts, general machinery, hydraulic parts.

     

    技術指標 :

    Main ingredient content

    99%Alumina

    99.9%Alumina

    Densityg/cc

    3.86

    3.93

    Water absorption%

    0

    0

    Mechanical properties

     Vickers hardnessGPa

    13.8

    18.5

     Bending strengthMPa

    350

    350

     Compressive strengthMPa

    2250

    2600

     Young's modulusGPa

    330

    380

     Poisson's ratio

    0.23

    0.23

     Fracture toughnessMPa·m1/2

    3

    4~5

    Thermal characteristics

     Coefficient of linear expansion40~400℃*10-6/℃

    7.1

    8.2

     Thermal conductivity20℃W/(m·K)

    25

    32

     Specific heatJ/(kg·K)*103

    0.78

    0.78

    Thermal shock resistance ℃

    200

    220

    Electrical characteristics

     Volume resistivity20℃ Ω·cm

    >1014

    >1015

     Dielectric strengthKV/mm

    16

    17

     Dielectric constant

    9

    9.7

     Dielectric loss factor*10-4

    3

    1

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    The company insists on independent innovation, and has obtained a number of scientific research achievements and invention patents in the fields of rubber chemicals and ultrafine materials.

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