Portal de Periódicos da CAPES

Entropy of melting: Its effect on the liquid-liquid phase change of carbon

1995; American Institute of Physics; Volume: 77; Issue: 9 Linguagem: Inglês

10.1063/1.359400

1520-8850

Mathias van Thiel, Francis H. Ree,

Graphite, nuclear technology, radiation studies

Graphite melting experiments reported recently suggest that the enthalpy of melting of graphite decreases slowly and linearly with pressure, unlike our previous suggestion, which included a liquid-liquid phase change like those observed in other systems. We have investigated the possibility that this smooth pressure dependence could eliminate the liquid-liquid phase change. Our analysis shows that the available experimental enthalpies of melting cannot rule out such a phase change. An accurate determination of the (P,T) melting line curvature can shed light on the presence or absence of such a phase change.