Thermodynamics of interaction between refractory compounds and metal melts

• Published in: Powder metallurgy and metal ceramics Vol. 50; no. 3-4; pp. 230 - 238
• Main Authors: Konoval, V. P., Panasyuk, A. D., Lavrenko, V. A.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-07-2011; Springer; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Chromium; Composites; Glass; Materials Science; Melts; Metallic Materials; Natural Materials; Nickel; Nitrides; Refractories; Refractory compounds; Systems (metallurgical); Thermodynamics; Titanium; interaction; refractory compounds; thermodynamic equilibrium calculations; Van Laar concept; chemical activity; metals (Ni, Cr, Ti)
• ISSN: 1068-1302; 1573-9066
• DOI: 10.1007/s11106-011-9322-0

Based on the thermodynamic assessment of equilibria in “refractory compound–metal melt” systems, the interaction in B
4
C–Al (Ni, Ni–Si, Ni–Mo) systems is predicted within the Van Laar theory at temperatures to 1800 K. It is established that interphase-active elements (nickel, titanium, vanadium, and chromium), being in a solid-solution state, do not show sufficient chemical activity or do not form new chemical compounds in interaction with refractory compounds (carbides, borides, and nitrides of IV–V group metals) unlike “refractory compound–liquid metal (Ni, Cr, Ti)” systems.