Carbon/carbon composites are carbon fiber reinforced carbon matrix composites (C/C). First, carbon fiber is braided or needled into a prefabricated body (carbon cloth, carbon fiber mesh, quasi-three-dimensional needle-punched felt, three- dimensional finely knitted overall fabric, three-dimensional punctured fabric,multi-directional woven fabric, etc.), and then impregnated with resin (or asphalt)- carbonized or The chemical vapor deposition/infiltration (CVD/CVI) process fills the pores in the porous preform to obtain the material with the required structure and properties.
Functions of C/C crucible
Monocrystalline silicon furnace thermal field systems for the solar and semiconductor industries.
| Item | Unit | Values |
| Density | B/cm3 | ≥1.5 |
| Tensile strength | MPa | ≥80 |
| Compressive strength | MPa | ≥160 |
| Bending strength | MPa | ≥150 |
| Thermal conductivity (1600℃) | W/(m.K) | 10-12 |
| Thermal expansion coefficient (horizontal) | x10-6/K | 1-2 |
| Thermal expansion coefficient (vertical) | x10-6/K | 6-8.5 |
| Ashcontent | ppm | <150 |
| Resistivity(R.T-1250℃) | μ Q·m | 25-50 |
| Thermal treatment temp | ℃ | ≥2000 |
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