Dense high-entropy boride ceramics with ultra-high hardness
By Yan Zhang, Wei‐Ming Guo, Jiang Zebin, Qi‐Qi Zhu, Shikuan Sun, Y. You, K. Plucknett, Hua-Tay Lin. Scripta Materialia, 2019
265 citations recorded by the source corpus.
Abstract Highly dense high-entropy boride ceramics with ultra-high hardness were prepared by spark plasma sintering of the self-synthesized high-entropy boride powders. High-entropy boride compounds of (Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2)B2, (Hf0.2Mo0.2Zr0.2Nb0.2Ti0.2)B2 and (Hf0.2Mo0.2Ta0.2Nb0.2Ti0.2)B2 with some oxide impurities were obtained by borothermal reduction at 1600 °C. The yield of the samples after sintering was improved to be 97.2 wt%, 92.8 wt% and 97.6 wt%. The densification and hardness of the high-entropy boride ceramics were remarkably enhanced after sintering the as-obtained powders at 2000 °C. The relative density of Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2 ceramics was 99.2% and the hardness achieved a value up to 28.3 ± 1.6 GPa, which was significantly higher than reported values.
Subfields: Mechanical Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/99bf0051afe430e7598da16349177d6946f3a2d7
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Mechanical Engineering
In Mechanics of Materials
Citations in the corpus
- From high-entropy ceramics to compositionally-complex ceramics: A case study of fluorite oxides (2019, background): “Since 2015, high-entropy ceramics (HECs) have been made in bulk form, including various high-entropy oxides [6–10], borides [11,12], carbides [13,14], nitrides [15], and silicides [16,17].”
- A step forward from high-entropy ceramics to compositionally complex ceramics: a new perspective (2020, background): “Notably, a general property of HECs is represented by the increased hardness in comparison with the RoM averages, which have been reported for highentropy borides [48, 50, 54, 56], carbides [59, 61, 63, 66], and silicides [44, 45].”
- Dual-phase high-entropy ultra-high temperature ceramics (2020, background): “Since then, HEBs [21, 34-36] and high-entropy carbides (HECs) [22-25, 37] such as (Ti0.”