Synthesis of single-phase high-entropy carbide powders
By Lun Feng, W. Fahrenholtz, G. Hilmas, Yue Zhou. Scripta Materialia, 2019
223 citations recorded by the source corpus.
Abstract High-entropy carbide powders were produced by a two-step synthesis process consisting of carbothermal reduction followed by solid solution formation. Nominally pure (Hf,Zr,Ti,Ta,Nb)C in a single-phase rock salt structure had an average particle size of about 550 nm and an oxygen content of 0.2 wt%. The fine particle size was due to the use of high-energy ball milling prior to carbothermal reduction combined with the relatively low synthesis temperature of 1600 °C. Oxygen content was minimized by completion of the carbothermal reduction reactions under vacuum. This is the first report of synthesizing a high-entropy carbide powder using individual transition metal oxides and carbon as precursors.
Subfields: Aerospace Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/d7c526720c7cb0033db279fa368c1fdcb61a0c35
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Citations in the corpus
- The effect of submicron grain size on thermal stability and mechanical properties of high‐entropy carbide ceramics (2020, background): “(4) The fined-grained HECs showed higher cracking resistance to Vickers indentation than the coarse-grained one due to the micromechanistic mechanisms such as crack deflection.”
- High-Entropy Ceramics (2019, methodology): “[1] used metallic oxides and carbon black powder as starting material to produce high-entropy (Hf, Zr, Ti, Ta, Nb)C powder.”