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High-entropy ceramics
- Source :
- Nature Reviews Materials. 5:295-309
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Disordered multicomponent systems, occupying the mostly uncharted centres of phase diagrams, were proposed in 2004 as innovative materials with promising applications. The idea was to maximize the configurational entropy to stabilize (near) equimolar mixtures and achieve more robust systems, which became known as high-entropy materials. Initial research focused mainly on metal alloys and nitride films. In 2015, entropy stabilization was demonstrated in a mixture of oxides. Other high-entropy disordered ceramics rapidly followed, stimulating the addition of more components to obtain materials expressing a blend of properties, often highly enhanced. The systems were soon proven to be useful in wide-ranging technologies, including thermal barrier coatings, thermoelectrics, catalysts, batteries and wear-resistant and corrosion-resistant coatings. In this Review, we discuss the current state of the disordered ceramics field by examining the applications and the high-entropy features fuelling them, covering both theoretical predictions and experimental results. The influence of entropy is unavoidable and can no longer be ignored. In the space of ceramics, it leads to new materials that, both as bulk and thin films, will play important roles in technology in the decades to come. The valuable combination of disorder and non-metallic bonding gives rise to high-entropy ceramics. This Review explores the structures and chemistries of these versatile materials, and their applications in catalysis, water splitting, energy storage, thermoelectricity and thermal, environmental and wear protection.
- Subjects :
- Materials science
Configuration entropy
02 engineering and technology
Nitride
010402 general chemistry
021001 nanoscience & nanotechnology
Thermoelectric materials
01 natural sciences
Engineering physics
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
Thermal barrier coating
visual_art
Thermoelectric effect
Materials Chemistry
visual_art.visual_art_medium
Ceramic
Thin film
0210 nano-technology
Energy (miscellaneous)
Phase diagram
Subjects
Details
- ISSN :
- 20588437
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Nature Reviews Materials
- Accession number :
- edsair.doi...........6b6cb8dbb04d32849d5403bd77f3e5bb