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Volume 5 Issue 2
Mar.  2023
Article Contents

Wang F, Monteverde F, Cui B. 2023. Will high-entropy carbides and borides be enabling materials for extreme environments?. Int. J. Extrem. Manuf. 5 022002.
Citation: Wang F, Monteverde F, Cui B. 2023. Will high-entropy carbides and borides be enabling materials for extreme environments?. Int. J. Extrem. Manuf. 022002.

Will high-entropy carbides and borides be enabling materials for extreme environments?


doi: 10.1088/2631-7990/acbd6e
More Information
  • Publish Date: 2023-03-09
  • 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.

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Will high-entropy carbides and borides be enabling materials for extreme environments?

doi: 10.1088/2631-7990/acbd6e
  • 1 Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States of America;
  • 2 National Research Council of Italy-Institute of Science, Technology and Sustainability for Ceramics, I-48018 Faenza, Italy;
  • 3 Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE 68588, United States of America

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.

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