New Route to Synthesize High-Entropy Carbide Powders

In the recently published in the journal Metallurgical and Materials Transactions A 55 (2024), 523-536 work titled New Route to Synthesize High-Entropy Carbide Powders by Mechanical Alloying, by Rafał Idczak, Piotr Sobota, Lan Maria Tran, Michał Babij, Karolina Idczak, Wojciech Nowak i Adam Pikul, the authors describe a new route to synthesize high-entropy carbide powders using toluene as the source of carbon on the example of new carbides (NbTa)0.67(TiHfZr)0.33C and (NbTa)0.67(MoHfW)0.33C.

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The studied materials were obtained by mechanical alloying in a planetary mill. A number of structural (XRD structural diffractography, SEM-EDS mapping and morphology, PALS defect concentration study, and surface chemistry with XPS) and magnetic studies for samples freshly synthesized and heat-treated for 10 days were performed. The obtained results prove the efficiency of the discovered method of synthesis. Unexpectedly, the magnetic and superconductive properties present in the alloys on the basis of which those carbides were designed, were not observed in the studied samples.