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    Zirconium Boride Powder

  • Description

    A light grey metallic powder, chemically attacked very little by cold HCl, more rapidly by HNO3, and is dissolved by aqua regia. It reacts with H2SO4 and is readily attacked by fused alkali hydroxides, carbonates and disulfides. Produced by various processes.
    ZrB2, a hard, toxic, gray powder that melts at 3000°C;  It is also known as zirconium diboride.
    Chemical Formula: ZrB2


    Molecular Weight (g/mol.) 112.8
    Density (g/cm3) 6.09
    Specific Gravity  
    Youngs Modulus 450
    Melting Point (°C) 2990-3040 
    Mohs Hardness 8
    Surface Area (m2/g) 0.5-0.8
    Thermal Conductivity @20°C (cal/s-cm-°C)  0.055
    Odor Odorless
    Apparent Density (Scott- g/in3) 25-30
    Crystallography Hexagonal
    Solubility in Water Insoluble

    Chemical Properties

    B= 19.20% and Zr+Hf = 80.80%

    Physical Properties

    Various granulations are available from coarse powder to 4-7 microns average

    Typical Applications

    a) Useful in nuclear applications because of the presence of Boron-10.
    b) Also used as an aerospace refractory, in cutting tools and to protect thermocouple tubes.
    c) Other applications include use of its relatively high conductivity, especially for a ceramic.


    Steel drums

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