Results 11 to 20 of about 27,104 (282)

Ultra-dense dislocations stabilized in high entropy oxide ceramics

Nature Communications, 2022
Dislocation engineering is important for designing structural materials. Here the authors demonstrate that a high-entropy oxide ceramic with a high density of edge dislocations can be stabilized by increasing the compositional complexity, resulting in ...
Yi Han, Xiangyang Liu, Qiqi Zhang, Muzhang Huang, Yi Li, Wei Pan, Peng-an Zong, Lieyang Li, Zesheng Yang, Yingjie Feng, Peng Zhang, Chunlei Wan   +11 more
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High-entropy ceramics

Nature Reviews Materials, 2020
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.
Corey Oses, Cormac Toher, Stefano Curtarolo   +2 more
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Flexible high-entropy functional ceramics. [PDF]

Nat Commun
Functional ceramics, once integrated with flexibility, hold great promise for cutting-edge electronic devices. Unfortunately, functionality and flexibility are inherently exclusive in ceramics: the long-range order of ionic lattices bestows polarization-like properties that accompany brittleness, whereas disorder tolerates bond rotation to generate ...
Dou L, Yang B, Ye X, Zhang Y, Zhu W, Chen H, Jiang Y, Fang B, Lan S, Li Q, Liu Y, Li P, Zhang X, Li S, Zhang Y, Xu W, Zhang X, Wu L, Li X, Wei X, Yu Z, Nan CW, Lin YH.   +22 more
europepmc   +2 more sources

High-entropy ceramics: Propelling applications through disorder

MRS Bulletin, 2022
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. Thermo-chemical stability is increased by the preference of chemically disordered mixtures for high-symmetry super ...
Cormac Toher, Corey Oses, Marco Esters, David Hicks, George N. Kotsonis, Christina M. Rost, Donald W. Brenner, Jon-Paul Maria, Stefano Curtarolo   +8 more
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High-entropy alumino-silicides: a novel class of high-entropy ceramics [PDF]

Science China Materials, 2019
High-entropy ceramics (HECs) are gaining significant interest due to their huge composition space, unique microstructure, and adjustable properties. Previously reported studies focus mainly on HECs with the multi-cationic structure, while HECs with more than one anion are rarely studied.
Tongqi Wen, Honghua Liu, Beilin Ye, Da Liu, Yanhui Chu   +4 more
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Extremely hard and tough high entropy nitride ceramics [PDF]

Scientific Reports, 2020
AbstractSimultaneously hard and tough nitride ceramics open new venues for a variety of advanced applications. To produce such materials, attention is focused on the development of high-entropy ceramics, containing four or more metallic components distributed homogeneously in the metallic sublattice.
Moskovskikh, Dmitry, Vorotilo, Stepan, Buinevich, Veronika, Sedegov, Alexey, Kuskov, Kirill, Khort, Alexander, Shuck, Christopher, Zhukovskyi, Maksim, Mukasyan, Alexander   +8 more
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Subtle Variations of the Electronic Structure and Mechanical Properties of High Entropy Alloys With 50% Carbon Composites

Frontiers in Materials, 2020
Binary and ternary transition metal carbides are stable ceramic crystals with outstanding mechanical properties. In recent years, multicomponent single-phase high entropy alloys enjoyed explosive growth due to many of their outstanding physical ...
Saro San, Wai-Yim Ching
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A New Chapter in Ceramic Materials: High-entropy Ceramics

Jinshu shijie
Jiao XU, Miao BAI, Qiuwei XING
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Microstructure and dielectric properties of high-entropy Sr0.9La0.1MeO3 (Me: Zr, Sn, Ti, Hf, Mn, Nb) perovskite ceramics

Journal of Materials Research and Technology, 2022
Entropy engineering has attracted extensive attention, which is applied to induce controllable changes in structures through lattice distortion effects to optimize certain properties. In this work, a series of pure phase high-entropy dielectric ceramics,
Zhihao Lou, Xin Xu, Ping Zhang, Lingyun Gong, Qian Chen, Jie Xu, Artur Rydosz, Feng Gao   +7 more
doaj   +1 more source

Temperature-dependent thermal expansivities of silicate melts: The system anorthite-diopside [PDF]

, 1992
The temperature-dependent thermal expansivities of melts along the join anorthite-diopside have been determined on glassy and liquid samples using a combination of calorimetry, dilatometry, and Pt double bob Archimedean densitometry.
Dingwell, Donald B., Knoche, Ruth, Webb, Sharon L.   +2 more
core   +1 more source