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The pressure dependence of melting temperatures for boron carbide and B 4 C-carbon eutectic has been studied up to 8 GPa, and it was found that in both cases the melting curves exhibit negative slope (−13 ± 6 K/GPa), that is indicative of higher density of the melt as compared to the solid phase.
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Mukhanov et al. (2012) studied this question.
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