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Compositionally Complex Ceramics
Jian Luo
The development of high-entropy ceramics (HECs) over the past decade has extended the high-entropy concept to a diverse range of oxides, borides, silicides, carbides, nitrides, flu…
High-temperature stable refractory high-entropy nanoalloys with enhanced sinterability
Mingde Qin, Sashank Shivakumar, Jian Luo
Nanocrystalline alloys (nanoalloys) are prone to grain growth. It is known that grain boundary segregation and precipitation can stabilize nanoalloys, but the stabilization becomes…
Short-Range Order and Origin of the Low Thermal Conductivity in Compositionally Complex Rare-Earth Niobates and Tantalates
Andrew J. Wright, Qingyang Wang, Yi-Ting Yeh +5
Rare-earth niobates and tantalates possess low thermal conductivities, which can be further reduced in high-entropy compositions. Here, a large number of 40 compositions are synthe…
High-Entropy Rare Earth Tetraborides
Mingde Qin, Qizhang Yan, Haoren Wang +2
Six high-entropy rare earth tetraborides of the tetragonal UB4-prototyped structure have been successfully synthesized for the first time. The specimens are prepared from elemental…
Dual-Phase High-Entropy Ultra-High Temperature Ceramics
Mingde Qin, Joshua Gild, Chongze Hu +7
A series of dual-phase high-entropy ultrahigh temperature ceramics (DPHE-UHTCs) are fabricated starting from N binary borides and (5-N) binary carbides powders. >~99% relative dens…
Dissolving and Stabilizing Soft WB2 and MoB2 Phases into High-Entropy Borides via Boron-Metals Reactive Sintering to Attain Higher Hardness
Mingde Qin, Joshua Gild, Haoren Wang +3
Five single-phase WB2- and MoB2-containing high-entropy borides (HEBs) have been made via reactive spark plasma sintering of elemental boron and metals. A large reactive driving fo…
Part I: Theoretical Predictions of Preferential Oxidation in Refractory High Entropy Materials
Lavina Backman, Joshua Gild, Jian Luo +1
High entropy materials, which include high entropy alloys, carbides, and borides, are a topic of substantial research interest due to the possibility of a large number of new mater…
Single-Phase High-Entropy Intermetallic Compounds (HEICs): Bridging High-Entropy Alloys and Ceramics
Naixie Zhou, Sicong Jiang, Timothy Huang +3
High-entropy intermetallic compounds (HEICs) were fabricated by mechanical alloying and spark plasma sintering to fill a knowledge gap between the traditional high-entropy alloys (…