About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals: Towards Sustainable Process Modeling, Design, and Operation
|
| Presentation Title |
Syntheses of Ceramic Composites by Chemical Vapor Infiltration Using Microwave Heating |
| Author(s) |
Vimal Ramanuj, Wenjun Ge, Ramanan Sankaran, Ying She, Zissis Dardas |
| On-Site Speaker (Planned) |
Vimal Ramanuj |
| Abstract Scope |
Chemical Vapor Infiltration (CVI) is a technology used to manufacture ceramic composites. Hot reactive gases infiltrate a porous preform and undergo chemical conversion to a solid ceramic phase thereby, “densifying” it. Conventional heating leads to a thermal gradient within the preform (hot on the outside) that competes with reagent transport making it challenging to densify the part uniformly. We investigate a proposed solution that is to leverage inverted temperature distribution (hot core) through microwave heating to overcome the challenge and achieve a desirable “inside-out” densification behavior. Our pore-resolved direct numerical simulations (DNS) approach leverages high performance computing (HPC) to capture densification of silicon carbide (SiC) composites. We emphasize on the key CVI characteristics namely, spatial and temporal density evolution, residual porosity (part quality) and processing times for various temperature profiles. Results are compared with representative isothermal CVI cases to realize the benefits in terms of faster processing and improved quality. |
| Proceedings Inclusion? |
Planned: |