Non-Oxide Ceramic Matrix Composites
COI Ceramics, Inc. (COIC) is a leading developer and manufacturer of non-oxide ceramic matrix composites, produced using the Polymer Infiltration & Pyrolysis (PIP) process. This process is a versatile and robust manufacturing method that is well-suited for the fabrication of complex-shaped components. The PIP process takes advantage of the shaping capability afforded by a combination of polymeric and ceramic process steps.
COIC offers a number of non-oxide Ceramic Matrix Composites (CMCs) materials that incorporate various types of Silicon Carbide (SiC) and carbon reinforcing fibers, SiC/Silicon Nitride (Si3N4) matrix chemistries, and matrix modifiers. By selecting various combinations of these constituents, ceramic matrix composites can be produced with tailored properties for a broad range of industries and applications. Typically, constituents are chosen based on application-specific operating conditions such as temperature, environment, mechanical stresses, and lifetime requirements.
Benefits
Physical Attributes
- High Temperature Capability
- High Shear Stress Capability
- Dense Matrix (>95%)
- Wear Resistance
Reinforcing Fiber Flexibility
- S200 - CG Nicalon
- S200H - Hi-Nicalon
- S300 - Sylramic SiC
- S400 - Carbon
BN-Based Fiber Interface Coating
Typically Used For
Honeycomb Panels
Military Aircraft Propulsion Exhaust
Thermal Protection System
Material Comparisons
COIC offers several grades of SiC-SiC CMC and SiC-SiNC CMC systems to achieve an optimum cost versus performance solution for customers looking for a Silicon Carbide (SiC) fiber reinforced CMC, in a SiC or SiNC matrix. The S200 CMC is a lower cost option for intermediate temperature applications. The S200H and S300 CMCs offer higher performance capability but have a higher manufacturing cost. COIC also offers the S400 family of carbon fiber reinforced CMC. The C-SiC CMC and C-SiNC CMC chemistries offer a range of cost and performance to support the selection of an optimum value solution for customers.
COIC also offers the S400 family of carbon fiber reinforced CMC. The C-SiC CMC and C-SiNC CMC chemistries offer a range of cost and performance to support the selection of an optimum value solution for customers.
| Material Name | Fibers | Fiber Interface | Matrix | Maturity |
|---|---|---|---|---|
| S200 | CG Nicalon™ (1) | BN-Based | SiNC (a) | Flight Testing |
| S200H | Hi-Nicalon | BN-Based | SiNC (a) | NASA Database |
| S300 | Sylramic™ SiC (2) | BN-Based | SiC + Si3N4 (b) | NASA Database |
| S400 | Carbon | Carbon | SiC + Si3N4 (b) | NASA Database |
| S400N | Carbon | Carbon | SiNC (a) | NASA Database |
| (1) CG Nicalon, Hi-Nicalon trademarks of NGS Advanced Fibers Co., Ltd.; (2) Sylramic trademark of COI Ceramics, Inc.; (a) amorphous matrix; (b) crystalline matrix. | ||||
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