High-Entropy Metal Diborides: A New Class of High-Entropy Materials and a New Type of Ultrahigh Temperature Ceramics
University of California San Diego · University of California, Berkeley
Abstract
Abstract Seven equimolar, five-component, metal diborides were fabricated via high-energy ball milling and spark plasma sintering. Six of them, including (Hf 0.2 Zr 0.2 Ta 0.2 Nb 0.2 Ti 0.2 )B 2 , (Hf 0.2 Zr 0.2 Ta 0.2 Mo 0.2 Ti 0.2 )B 2 , (Hf 0.2 Zr 0.2 Mo 0.2 Nb 0.2 Ti 0.2 )B 2 , (Hf 0.2 Mo 0.2 Ta 0.2 Nb 0.2 Ti 0.2 )B 2 , (Mo 0.2 Zr 0.2 Ta 0.2 Nb 0.2 Ti 0.2 )B 2 , and (Hf 0.2 Zr 0.2 Ta 0.2 Cr 0.2 Ti 0.2 )B 2 , possess virtually one solid-solution boride phase of the hexagonal AlB 2 structure. Revised Hume-Rothery size-difference factors are used to rationalize the formation of high-entropy solid solutions in these metal diborides. Greater than 92% of the theoretical densities have been generally achieved…
Citation impact
- FWCI
- 37.16
- Percentile
- 100%
- References
- 24
Authors
10- JGJoshua GildCorresponding
University of California San Diego, University of California, Berkeley
- YZYuanyao Zhang
University of California San Diego, University of California, Berkeley
- THTyler Harrington
University of California San Diego, University of California, Berkeley
- SJSicong Jiang
University of California San Diego, University of California, Berkeley
- THTao Hu
University of California San Diego
Topics & keywords
- Materials science
- Spark plasma sintering
- Ceramic
- Nanoscopic scale
- Oxide
- Metal
- Thermodynamics
- Composite material