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  • FIRSTAR Silicon carbide cyclone

      


    Silicon carbide Cyclone


    Reaction bonded silicon carbide is a multi-phased material typically containing 7-15% silicon metal, some minor amount of unreacted carbon, with the remaining body being SiC. Reaction bonded SiC materials are manufactured utilizing a variety of processes depending on desired final product geometry, configuration, and required tolerances.


    Reaction bonded silicon carbide has proven to be an excellent material choice for wear applications such as pipe liners, flow control chokes and larger wear components in the mining as well as other industries. CALSIC RB offers an economical and reliable material option for many applications where the corrosion resistance or wear resistance of CALSIC S (sintered silicon carbide) is not necessary.


    Typical properties of silicon carbide are:

    Excellent thermal shock resistance

    Excellent hot strength

    Excellent abrasion resistance

    Good thermal conductivity

    Relatively low coefficient of thermal expansion


    Typical applications for silicon carbide are:

    Kiln furniture for powder metal and ceramic processing

    Kiln components including:

    hearths

    entrance tiles

    skid rails

    muffles

    side walls

    arches


    Reaction Bonded Silicon Carbide Properties


    Physical Property

    Units

    Typical Value

    Microstructure

    %

    87% SiC, 12% Si

    Density

    g/cc

    > 3.02

    Apparent Porosity

    %

    < 0.1

    Max Use Temperature

    °C

    1380

    Flexural Strength

    MPa

    250 @ 20°C

    280 @ 1200°C

    Compressive Strength

    MPa

    2500

    Modulus of Elasticity

    GPa

    330 @ 20°C

    300 @ 1200°C

    Coefficient of Thermal Expansion

    1 x 10-6 in/in °C

    4.5

    Thermal Conductivity @ 1200°C

    W/mK

    45

    Poisson's Ratio

    -

    0.2

    Vickers Hardness

    GPa

    20-22


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