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    Al?O? Precision alumina ceramic grading wheel

    Al?O?Alumina ceramics have good insulation, thermal insulation and wear resistance. Because of their relatively low price and balanced performance, it is one of the most
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    Alumina ceramics have good insulation, thermal insulation and wear resistance. Because of their 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.

     

    Main features: 

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

    main application:

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

    Technical indicators:

    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

    Keyword:
    al2o3
    氧化鋁
    設備
    mpa
    特性
    350
    應用
    廣泛
    20
    絕緣性
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    Hotline:

    021-65726586

    地址

    Address:

    Rm. 504, No.1398, PingLiang Rd.,Yangpu District, Shanghai, China 

    About us

    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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