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Crystal pulling
All our parts are supplied to the highest purity levels.
The total ash is lower than 10 ppm for parts up to 1300 mm
in diameter.
For low particle release, all the graphite and carbon-carbon
(C/C) parts up to 1300 mm diameter can be coated with
pyrolytic carbon and SiC.
The C/C composite material can also be infiltrated with CVI-SiC
and CVI-PYC to protect the matrix and the fibers themselves
from methanisation in the H2 atmosphere used in the polysilicon
production stage. For the insulation package, we can supply
high corrosion resistant soft and rigid graphite felt or foam.
This material can be purified and infiltrated with PYC or SiC in
the same way as the C/C composites and graphite.
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