Abstract

Experimental data for the thermodynamic properties of titanium on the melting curve in the pressure range from atmospheric value to 90 GPa are analyzed and brought into correspondence. The problems that have been considered are (i) the lack of data for the solid β-phase density near the normal melting point and (ii) the formation probability of a triple point on the melting curve for the coexisting β-, ω-, and liquid phases of titanium. To estimate the change of the volume upon melting 3d elements from Mendeleev’s periodic system, a correlation between the change of the volume, ΔV m , and the change of the entropy, ΔS m , on the melting curve at atmospheric pressure is suggested and effectively used.

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