Ventra - Cutting edge carbon graphite products and solutions
Ventra - Cutting edge carbon graphite products and solutions
Coated Graphite
A 20–40 µm CVD pyro-carbon layer creates a glass-like, impervious surface with <1 ppm impurities, ideal for ultra-clean silicon melts.
Features
Ultra-smooth finish (Ra ≤0.1 µm) – reduces nucleation sites, improving crystal yield
Dense, non-porous – zero moisture absorption, eliminating hydrogen flare
High purity – total metallic impurities <5 ppm after coating
Thermal-shock tolerant – matches graphite expansion, stays adherent through 1,600 °C cycles
Industrial Applications
Semiconductor
Crucibles and heaters for Czochralski silicon pullers
Laboratory
High-purity boats for directional-solidification experiments
Glass/Ceramics
Moulds for precision glass lenses where surface quality is critical
Require more customized products and technical advice?
