In this study, we explore a simple and effective method for producing a quaternary solid-solution of carbides, a medium-entropy (Ti1/4Ta1/4Zr1/4Nb1/4)C. Using commercially-available carbide powders with an equimolar ratio and performing spark plasma consolidation at 1927 °C and 1977 °C, we demonstrated that the phase formation and high-temperature flexural strength can be controlled using the processing conditions. The flexural strength and fracture toughness at room temperature were reached an average of 560 MPa and 3.2 MPa m1/2, respectively. The high-temperature performance of these ceramics was analyzed and compared with the available data for the group IV and V transition metal carbide monoliths.
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Demirskyi et al. (2020) studied this question.
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