About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
American Ceramic Society Journal Awards Symposium
|
| Presentation Title |
Slurry Material Extrusion of Chopped Carbon Fiber Reinforced Silicon Carbide Ceramic Matrix composites (CMCs) |
| Author(s) |
Rodney W. Trice, Jeffrey Youngblood, Kyle Cox, Tess Marconie, Raina Shreiner Barger, Karan Motwani |
| On-Site Speaker (Planned) |
Rodney W. Trice |
| Abstract Scope |
In this study, monolithic SiC and chopped carbon-fiber reinforced (Cf)/SiC ceramic matrix composites (CMCs) were additively manufactured via direct ink writing (DIW). Samples employing five different print paths were prepared from SiC and 10 vol.% Cf/SiC inks. All parts were pressurelessly sintered, with relative densities of 96% measured. SEM was used to show a high degree of fiber alignment parallel to the direction of the print. Thus, CMC architectures consistent with the print paths were created when printing the 10 vol.% Cf/SiC inks. Characteristic flexure strengths for monolithic SiC and 10 vol.% Cf/SiC CMC samples were the same for the 0° print path, measuring 360–375 MPa. Fiber pullout was observed on the fracture surface of the 10 vol.% Cf/SiC CMCs. The Weibull modulus for the 10 vol.% Cf/SiC CMC samples (10.7) was greater than the monolithic SiC samples (7.4). |