Custom Carbon Carbon Insulation Cover for PV Crystal Furnace Hot Zone

Carbon-carbon (CC) composites combine carbon fiber reinforcement with a carbon matrix, giving higher strength, toughness, and thermal-shock resistance than monolithic graphite at similar temperature ratings. CC parts are lighter than many metal fixtures and maintain dimensional stability through repeated high-temperature cycles. They cost more upfront but typically offer longer service life in demanding hot-zone applications.

Common CC hot-zone components include crucibles, susceptor plates, insulation cylinders, guide cylinders, crucible supports, bottom shields, and structural fasteners. These parts are used in CZ/FZ silicon growth, SiC crystal growth, and vacuum/inert furnaces operating above 2000 celsius degree. Selection depends on the furnace type, load, and thermal cycle profile.

Yes. We machine CC plates, cylinders, crucibles, bolts, nuts, and other hot-zone parts to your drawings or samples. Share your dimensional drawing, quantity, and operating conditions and we will confirm feasibility and lead time.

Key properties to specify include bulk density, compressive strength, flexural strength, tensile strength, tensile modulus, electrical resistivity, and thermal conductivity at the operating temperature. Also state maximum service temperature, atmosphere (vacuum/inert), and part geometry. We will match or confirm properties against our grade datasheet for your application.