|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of High and Ultra-High Temperature Ceramics and Composites: Processing, Characterization and Testing
||Deposition of UHTC Coatings on Refractory Substrates by Directed Energy Methods
||Zlatomir Apostolov, Noam Eliaz, Michael Cinibulk
|On-Site Speaker (Planned)
Extreme environments and advanced design architectures impose increasingly demanding requirements on the survivability and manufacturability of high-speed aerial platforms. Leading edges and control surfaces carry the brunt of environmental loads and require levels of protection surpassing those of the rest of the aeroshell. Ultra-high temperature ceramics (UHTCs) are often the material of choice to serve as protective coatings; however, their durability, paired with complex surface geometry and state of the respective substrates, can create significant obstacles towards efficient coating deposition. Here we introduce a recent effort exploring the deposition of UHTC compositions as coatings on C- and SiC-based composite substrates by Directed Energy methods. Characterization of the substrates and powder feedstock, as well as preliminary melt studies of candidate compositions and blends are presented. Additionally, routes to address some of the foreseeable obstacles, as encountered in previous work by the authors and others in the field, will also be discussed.
||Planned: Other (journal publication, etc.; describe below)