Abstract

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 and borides, 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 the compositional complexity, atomic-level disorder, lattice distortion, and other fundamental processes related to defect formation and phonon scattering. This manuscript serves as a critical review of the recent progress in high-entropy carbides and borides, focusing on synthesis and evaluations of their performance in extreme high-temperature, irradiation, and gaseous environments.

Details

Title
Will high-entropy carbides and borides be enabling materials for extreme environments?
Author
Wang, Fei 1 ; Monteverde, Frederic 2   VIAFID ORCID Logo  ; Cui, Bai 3   VIAFID ORCID Logo 

 Department of Mechanical & Materials Engineering, University of Nebraska–Lincoln , Lincoln, NE 68588, United States of America 
 National Research Council of Italy—Institute of Science, Technology and Sustainability for Ceramics , I-48018 Faenza, Italy 
 Department of Mechanical & Materials Engineering, University of Nebraska–Lincoln , Lincoln, NE 68588, United States of America; Nebraska Center for Materials and Nanoscience, University of Nebraska–Lincoln , Lincoln, NE 68588, United States of America 
First page
022002
Publication year
2023
Publication date
Jun 2023
Publisher
IOP Publishing
e-ISSN
26317990
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2785260475
Copyright
© 2023 The Author(s). Published by IOP Publishing Ltd on behalf of the IMMT. This work is published under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.