Abstract
Abstract An analysis of the thermochemical properties and the phase diagram of the TaC system is presented, including the b.c.c., Ta 2 C x , TaC x , graphite, and liquid phases. The analysis was performed using a theoretical approach that involves the evaluation of the Gibbs energy functions by computer coupling phase diagram data and thermochemical measurements. The analysis is based or a combination of experimental and estimated values. The estimates were based on the regular behaviour of the vibrational entropy and other cohesive properties, which have been established in recent studies on transition metal compounds. A calculated phase diagram is reported, and extensive comparisons between calculations and experiments are presented.
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