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Thermodynamic Aspects of Interaction between Refractory Compounds and Metal Melts

V.Konoval,
 
A.Panasyuk,
 
† V.Lavrenko,
 
† V.Lavrenko
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2011, #03/04
http://www.materials.kiev.ua/article/1400

Abstract

Based on the thermodynamic assessment of equilibria in “refractory compound–metal melt” systems, the interaction in the B4C–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 the solid solution state, do not show sufficient chemical activity and 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.


CHEMICAL ACTIVITY, INTERACTION, METALS (NI, CR, TI), REFRACTORY COMPOUNDS, THERMODYNAMIC EQUILIBRIUM CALCULATIONS, VAN-LAAR CONCEPT

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