Journal
MRS BULLETIN
Volume 47, Issue 2, Pages 194-202Publisher
SPRINGER HEIDELBERG
DOI: 10.1557/s43577-022-00281-x
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Funding
- DOD-ONR [N00014-15-1-2863, N00014-21-12515]
- NSF [DMR-1921909, DGE-2022040]
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Disorder enhances desired material properties and provides new approaches for material synthesis. High-entropy ceramics have wide-ranging applications in various fields, such as coatings, thermal and environmental barriers, catalysts, batteries, thermoelectrics, and nuclear energy management.
Disorder enhances desired properties, as well as creating new avenues for synthesizing materials. For instance, hardness and yield stress are improved by solid-solution strengthening, a result of distortions and atomic-size mismatches. Thermochemical stability is increased by the preference of chemically disordered mixtures for high-symmetry superlattices. Vibrational thermal conductivity is decreased by force-constant disorder without sacrificing mechanical strength and stiffness. Thus, high-entropy ceramics propel a wide range of applications: from wear-resistant coatings and thermal and environmental barriers to catalysts, batteries, thermoelectrics, and nuclear energy management. Here, we discuss recent progress of the field, with a particular emphasis on disorder-enhanced properties and applications.
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