| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Emergent Materials Under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
Will High-entropy Carbides Be Enabling Materials for Extreme Environments? |
| Author(s) |
Bai Cui, Fei Wang , Lanh Trinh, Luke Wadle, Yongfeng Lu, Kaustubh Bawane, Zilong Hua, Linu Malakkal, Lingfeng He, Cody Dennett, Frederic Monteverde |
| On-Site Speaker (Planned) |
Bai Cui |
| Abstract Scope |
The concept of multi-principal component has created promising opportunities for the development of novel high-entropy ceramics for extreme environments encountered in advanced turbine engines, nuclear reactors, and hypersonic vehicles, as it expands the compositional space of ceramic materials with tailored properties within a single-phase solid solution. The unique physical properties of some high-entropy carbides, such as higher hardness, high-temperature strength, lower thermal conductivity, and improved irradiation resistance than the constitute ceramics, have been observed. These promising properties may be attributed to compositional complexity, atomic-level disorder, lattice distortion, and other fundamental processes related to defect formation and phonon scattering. This presentation focuses on the evaluations of the performance of these novel ceramic materials in extreme high-temperature, irradiation, and gaseous environments. |