PBN boat

  • ● Introduction

    Horizontal directional solidification method can be used to synthetize polycrystals. Directional solidification furnace is divided into 3 zones according to the thermal.
    Take gallium arsenide for example. Arsenic element will sublimate in low temperature region (about 630 ℃), then through the medium temperature region and form polycrystals in high temperature region with gallium gradually. PBN boats act the reaction vessel in high temperature region.

    ● Characteristic

    1. Our company can manufacture large size PBN boats (The maximum height can be 17 inches).
    2. High density (It can reach to 2.19 g/cm3).
    3. High purity (>99.99%).
    4. High cracking resistance (Excellent coefficient of thermal expansion).
    5. No deformation at high temperature (It can resist the high temperature of 2300℃ in vacuum)
    6. Long service life time.

    ● Parameter

    microhardness (knoop)(ab side)N/mm2691.88
    tensile strength(N∥C)N/mm2153.86
    bend strength(力|| “C”)N/mm2243.63
    elastic modulus
    thermo conductivity
    W/m·k“a” direction “c” direction
    (200℃)W/m·k60           2.60
    (900℃)W/m·k43.70       2.80
    dielectric strength(at room temperature)KV/mm56

    ● Application:

    The product can be used to synthesize crystal, melt and evaporate metal. This PBN product is mainly used for the production of III-V single-crystal with horizontal directional solidification method.