High entropy ceramics for applications in extreme environments
High entropy ceramics for applications in extreme environments
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DOI：
10.1088/2515-7639/ad2ec5
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发表时间：
2024-01
期刊：
影响因子：
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通讯作者：
T. Z. Ward;R. P. Wilkerson;B. Musicó;A. Foley;M. Brahlek;W. J. Weber;K. Sickafus;A. R. Mazza
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文献类型：
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作者：
T. Z. Ward;R. P. Wilkerson;B. Musicó;A. Foley;M. Brahlek;W. J. Weber;K. Sickafus;A. R. Mazza
复合材料在极端环境下的结构稳健性表现出了非凡的前景。其中，最常见的是高熵合金，其化学复杂性赋予了硬度、延展性和热弹性的罕见组合。与这些金属-金属键系统相反，离子键和共价键的加入导致了高熵陶瓷（HECs）的发现。这些材料还具有出色的结构，热学和化学稳健性，但具有更多种类的功能特性，可以实现连续可控的磁，电子和光学现象。在这个以实验为重点的视角中，我们概述了hec在极端环境下的功能应用潜力，其中内在稳定性可能为固有硬化器件设计提供新的途径。目前在高熵碳化物、含锕系元素陶瓷和高熵氧化物方面的研究工作在辐射、高温和耐腐蚀领域进行了综述，在这些领域中，局部无序的作用显示出了通向自我修复和结构坚固性的途径。在此背景下，概述了在恶劣环境中创建未来电子，磁性和光学设备的新策略。
Compositionally complex materials have demonstrated extraordinary promise for structural robustness in extreme environments. Of these, the most commonly thought of are high entropy alloys, where chemical complexity grants uncommon combinations of hardness, ductility, and thermal resilience. In contrast to these metal–metal bonded systems, the addition of ionic and covalent bonding has led to the discovery of high entropy ceramics (HECs). These materials also possess outstanding structural, thermal, and chemical robustness but with a far greater variety of functional properties which enable access to continuously controllable magnetic, electronic, and optical phenomena. In this experimentally focused perspective, we outline the potential for HECs in functional applications under extreme environments, where intrinsic stability may provide a new path toward inherently hardened device design. Current works on high entropy carbides, actinide bearing ceramics, and high entropy oxides are reviewed in the areas of radiation, high temperature, and corrosion tolerance where the role of local disorder is shown to create pathways toward self-healing and structural robustness. In this context, new strategies for creating future electronic, magnetic, and optical devices to be operated in harsh environments are outlined.