About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Manufacturing of High Temperature Ceramics and Composites: Processing, Characterization and Testing
|
| Presentation Title |
Reactive Melt Infiltration Approaches for Ultra-High Temperature Ceramic Composites |
| Author(s) |
Phylis Makurunje, Simon Middleburgh, William E. Lee |
| On-Site Speaker (Planned) |
Phylis Makurunje |
| Abstract Scope |
Ultra-high temperature ceramics have exceptional refractoriness, and this makes them attractive for application in aerospace and nuclear environments. However, the manufacture of ultra-high temperature ceramic matrix composites by reactive melt infiltration demands high processing temperatures. During reactive melt infiltration, feedstock metals are melted and infiltrated into the voids of the composite preform, which is typically carbon or silicon carbide fiber-based. This work highlights approaches that are applied to overcome the high temperature processing barriers in the preparation of carbide, boride, or nitride matrix composites. The approaches include introducing the feedstock metals as immiscible phases, miscible phases, silicide phases and/or silicide eutectics to lower melting temperatures. Lower infiltration temperatures result in improved mechanical properties of the ceramic matrix composites. Using additively manufactured preforms, applying rapid heating techniques and in situ real-time monitoring systems are further improvements to the reactive melt infiltration process for ultra-high temperature ceramic matrix composites. |