About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-Based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Extrusion Manufacturing (Direct Ink Write) of Carbon-Loaded Ultra-High Temperature Ceramic Matrix Composites |
| Author(s) |
David Calvo, Jeffrey Youngblood, Rodney W. Trice |
| On-Site Speaker (Planned) |
Rodney W. Trice |
| Abstract Scope |
A method for manufacturing carbon-fiber reinforced zirconium diboride (Cf/ZrB2) ultra-high temperature ceramic matrix composites (UHTCMCs) via direct ink writing (DIW) will be presented. The parameters for aqueous slurries were optimized, comprised of zirconium diboride (ZrB2), 10 vol.% pitch-based milled carbon fibers, polymer binder, ammonium polyacrylate dispersant, and varying amounts of carbon-yielding phenolic resin. The effect of phenolic resin additions on ink behavior and suitability for printing was studied via rheological measurements and zeta potential testing. SEM was used to observe fiber integrity after sintering. Four-point bend flexure testing was used to determine flexural strengths as a function of sintering temperature and phenolic additions. Sintered samples will be subject to high-heat flux conditions using an oxy-acetylene torch. |