On melting of B4C boron carbide under pressure
Vladimir A. Mukhanov, Petr S. Sokolov, Vladimir L. Solozhenko
TL;DR
This study investigates how the melting temperatures of boron carbide and B4C-carbon eutectic change under pressure, revealing a negative slope indicating denser melts compared to solids, up to 8 GPa.
Contribution
It provides the first detailed measurement of the pressure dependence of melting temperatures for B4C and its eutectic, showing a negative slope up to 8 GPa.
Findings
Melting curves have a negative slope of -13±6 K/GPa.
Melt density exceeds solid density under studied pressures.
Pressure influences melting behavior of boron carbide.
Abstract
The pressure dependence of melting temperatures for boron carbide and B4C-carbon eutectic has been studied up to 8 GPa, and it was found that in both cases the melting curves exhibit negative slope (-13\pm6 K/GPa), that is indicative of higher density of the melt as compared to the solid phase.
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