More Than Just Brakes
When most people hear “carbon-carbon composites,” they think of aircraft brakes or Formula 1 brake discs. But the remarkable properties of C/C materials — extreme temperature resistance, low thermal expansion, high strength-to-weight ratio, and chemical inertness — make them indispensable across a wide range of industries.
1. Semiconductor Manufacturing
The semiconductor industry relies on C/C composites for high-temperature process fixtures and tooling:
- Wafer carriers and susceptors: C/C components hold silicon wafers during chemical vapor deposition (CVD) and epitaxial growth processes at temperatures exceeding 1,200°C
- Ion implantation fixtures: The material’s dimensional stability under thermal cycling is critical for maintaining wafer positioning accuracy
- Advantages: Low contamination, excellent thermal uniformity, long service life compared to graphite alternatives
2. Crystal Growth Furnaces
Single-crystal silicon and silicon carbide production requires components that can withstand extreme temperatures for extended periods:
- Hot zone components: Heaters, heat shields, and crucible supports made from C/C composites
- Operating conditions: Temperatures up to 2,200°C in argon atmospheres
- Benefits: C/C offers superior thermal shock resistance and maintains structural integrity through thousands of heating/cooling cycles
3. Glass Manufacturing
High-temperature glass forming processes use C/C composites for:
- Glass molds: Non-wetting surfaces that produce superior surface quality on formed glass
- Conveyor components: Rollers and guides that withstand continuous contact with molten glass
- Advantages: Longer life than traditional metallic molds, better surface finish on glass products
4. Aerospace Thermal Protection
Beyond brakes, C/C composites are critical for spacecraft and hypersonic vehicle thermal protection:
- Nose cones: The nose tips of re-entry vehicles experience temperatures exceeding 2,500°C
- Leading edges: Wing leading edges on vehicles like the Space Shuttle used reinforced C/C (RCC) panels
- Rocket nozzles: C/C throat inserts and exit cones withstand the extreme thermal and erosive conditions of rocket exhaust
5. Nuclear Energy
Advanced nuclear reactor designs use C/C composites for:
- First wall components: In fusion reactor research (tokamaks), C/C composites protect the reactor wall from the plasma
- Control rod components: Dimensional stability and neutron transparency make C/C suitable for reactor control elements
- High-temperature gas reactors: Structural components in Generation IV reactor designs operating at 800-1,000°C
6. Metal Processing
C/C composites find applications in high-temperature metal processing:
- Vacuum furnace fixtures: Jigs and supports for heat-treating metal parts at temperatures up to 2,000°C
- Hot pressing dies: Sintering molds for advanced ceramics and powder metallurgy
- Continuous casting: Components in molten metal handling where thermal stability and chemical inertness are essential
7. Medical Equipment
The medical industry uses C/C composites for:
- X-ray transparent components: C/C is nearly transparent to X-rays, making it ideal for imaging tables, beam filters, and patient positioning systems
- Radiotherapy components: The material’s combination of X-ray transparency and structural rigidity is valuable in radiation treatment equipment
Why C/C Composites Excel in These Applications
The common thread across all these applications is the need for materials that can:
- Withstand temperatures above 1,000°C (and often above 2,000°C)
- Maintain dimensional stability through thermal cycling
- Resist chemical attack and contamination
- Provide high strength at low weight
- Offer long service life in demanding environments
CMCMAT’s Industrial C/C Solutions
CMCMAT manufactures carbon-carbon composite components for a range of industrial applications beyond braking. Our capabilities include custom shapes, sizes, and density specifications to meet your specific requirements.
Explore our industrial C/C applications or contact us to discuss your project.