Support crucible made from SIGRABOND® C/C for silicon crystal pulling

Products for silicon crystal pulling
in the photovoltaic industry:

Crucibles, heaters, heat shields, reflectors and insulation

Support crucible made from SIGRABOND® C/C and SIGRATHERM® rigid felt cylinder for insulation for silicon monocrystal pulling

Support crucible made from SIGRABOND® C/C
SIGRATHERM® rigid felt cylinder for insulation

Crystal pulling by the Czochralski process (CZ) makes high demands on plant components. In addition to heat resistance and a long service life, corrosion resistance and extremely high material purity are called for. To meet these requirements, the high-temperature zone (“hot zone”) in CZ units consists almost entirely of graphite components.

SGL Group produces all the graphite components for CZ units – also as a set.

These include heaters, crucibles, reflectors, and heat shields made from fine grain graphite or carbon fiber-reinforced carbon (C/C), as well as insulating components produced from graphite felts. From our broad carbon and graphite range, we select the best materials to suit the particular operating conditions. For components destined for silicon/silicon oxide atmospheres, our long-life isostatic graphite R6510 is first choice. Irrespective of this, the service life of highly stressed components can be increased with our SiC coatings.

Application-specific specialty graphites for monocrystal pulling in CZ units

Back to the top

Contact

Download Center