|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Synthesis and phase stability of high-entropy nitrides and carbonitrides
||Olivia Dippo, Tyler Harrington, Neda Mesgarzadeh, Kenneth Vecchio
|On-Site Speaker (Planned)
Ultra-high temperature ceramics (UHTCs) are critical materials for aerospace applications, such as on leading edges of supersonic aircraft. UHTCs such as transition metal carbides and nitrides have inherently favorable properties, as they are amongst some of the highest melting temperature materials. High-entropy versions of these UHTC compounds have the potential to elevate their high-temperature phase stability due to entropic stabilization. High-entropy transition metal nitrides and carbonitrides were experimentally fabricated in bulk sample form. Powder processing, bulk material densification, and single-phase character of resulting high-entropy ceramic materials were studied. Phase determination of various compositions was done using X-ray diffraction, and chemical homogeneity was characterized using energy dispersive X-ray spectroscopy. This work demonstrates the ability to continue to expand the field of high entropy alloys to include single-phase high entropy, ultra-high temperature nitrides and carbonitrides.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume