What is the difference between CVD and CVI?
CVD builds a layer on a surface; CVI deposits material inside the pores of a preform to densify it. CVI cycles are usually longer because the gas must diffuse into the preform.
CVD / CVI systems
C Series CVD and CVI systems for coatings and composite infiltration.
Use the C Series for chemical vapor deposition, chemical vapor infiltration, coating, densification, and composite process development with controlled precursor gas delivery.
C-SERIES
Process window
What this family is built to control.
01
CVD and CVI reactor design
02
Precursor gas delivery
03
High-temperature deposition
04
Coating and infiltration
Process definition
What this family is for.
Chemical vapor deposition (CVD) deposits a solid layer from reactive precursor gases on a heated surface, while chemical vapor infiltration (CVI) uses the same chemistry to deposit matrix material inside a porous fiber preform, densifying carbon or ceramic composites over repeated cycles. Gas delivery, temperature, pressure, and exhaust treatment together control the deposition rate and uniformity.
Selection boundary
When to choose this family.
- A coating or protective layer must be deposited from the gas phase on parts or substrates.
- Porous carbon or ceramic fiber preforms need matrix infiltration to produce C/C or ceramic matrix composites.
- Precursor gas flow, reactor pressure, and exhaust handling must be controlled and recorded per cycle.
Inquiry inputs
What to prepare before quotation.
- 01Process type (CVD coating or CVI densification) and target material
- 02Precursor and carrier gases, flow ranges, and reactor pressure
- 03Maximum temperature and temperature uniformity needed across the load
- 04Part or preform size, batch loading, and fixtures
- 05Exhaust treatment, safety, and site utilities
FAQ
Questions buyers ask before model comparison.
Which materials are processed in C Series systems?
Typical materials include C/C composites, SiC fiber composites, carbon materials, and ceramic matrix composites, subject to review of the precursor chemistry and process window.
How should a CVD/CVI system be specified?
Define the process type, gas chemistry, temperature and pressure window, load size, and exhaust requirements. The CVD vs CVI furnace selection guide lists the inputs in more detail.
Next useful pages
Hubs, guides, and review paths.
Equipment gallery
Models in this process family.
Suitable materials
C/C compositesSiC fiber compositescarbon materialsceramic matrix composites
Typical applications
CVD coatingsCVI infiltrationComposite densificationProtective layers
Models and scale-up
Start small. Configure for the stage you are in.
| Model | Scale | Temperature | Pressure / load | Atmosphere | Best for | |
|---|---|---|---|---|---|---|
| C1 | Lab / pilot | Project matched | No mechanical load | Process gas | Coating and infiltration trials | View model -> |
| C2 | Pilot / production | Up to 1600 C | No mechanical load | Process gas | Larger CVD/CVI campaigns | View model -> |
Next step