Thermophysical Properties of High-entropy Carbide (HfTaTiNbZr)C at Temperatures of 2500–5500 K

• Published in: High temperature Vol. 60; no. 5; pp. 612 - 615
• Main Authors: Savvatimskiy, A. I., Onufriev, S. V., Sedegov, A. S., Yudin, S. N., Moskovskikh, D. O.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-10-2022; Springer Nature B.V
• Subjects: Atoms and Molecules in Strong Fields; Carbides; Classical and Continuum Physics; Enthalpy; Entropy; Flat plates; Glass plates; High temperature; Industrial Chemistry/Chemical Engineering; Laser Matter Interaction; Liquidus; Materials Science; Physical Chemistry; Physics; Physics and Astronomy; Solidus; Thermophysical properties; Thermophysical Properties of Materials
• ISSN: 0018-151X; 1608-3156
• DOI: 10.1134/S0018151X2205011X

Experimental thermophysical data for high-entropy carbide (HfTaTiNbZr)C are presented for the first time at high temperatures (2500–5500 K). A fast (10 μs) method of heating by a current pulse was used. Samples in the form of flat plates with a thickness of ∼100 μm were clamped between glass plates to fix the sample and prevent the occurrence of a shunt discharge. Solidus and liquidus temperatures and properties of carbide were measured—melting heat, input energy (enthalpy) and specific heat—depending on temperature. The temperature was measured using a high-speed pyrometer at a wavelength of 856 nm.