Jun 15, 2023 · We construct the phase diagram of a monotropic type for carbon under the Berman-Simon line. It describes metastable phase transformations occurring in diamond when the graphitization is delayed.

Jul 24, 2011 · We demonstrate that the large lattice distortions that accompany the formation of diamond nuclei inhibit the phase transition at low pressure, and direct it towards the hexagonal diamond phase at...

Jan 1, 2013 · In the figure, the straight solid line, so-called Berman-Simon line (B–S line), represents equilibrium phase boundaries: above the line diamond is the stable carbon allotrope, while graphite is stable below the line.

They are bounded on the high‐temperature side by the diamond‐graphite equilibrium line. This experimentally determined equilibrium line agrees very closely with the theoretical extrapolation of the thermodynamically calculated line proposed by Berman and Simon, viz.,

Jan 1, 1994 · The phase transformation between diamond and graphite has been studied by calculating the transiting probability of the carbon atoms over a potential barrier.

science [1]. One of the unsolved problems concerning the phase diagram of car-bon deals with the specific features of the phase transformations of dia-mond in the region located between the...

as shown in Fig.7.1, the straight solid line, so-called Berman-Simon line (B-S line) represents equilibrium phase boundaries: above the line diamond is the stable carbon allotrope, while graphite is stable below the line. Region A is the commercial synthesis of diamond from graphite by catalysis. Region B on the dashed line marks the temperature-

We construct the phase diagram of a monotropic type for carbon under the Berman-Simon line. It describes metastable phase transformations occurring in diamond when the graphitization is delayed.

We demonstrate that the large lattice distortions that accompany the formation of diamond nuclei inhibit the phase transition at low pressure, and direct it towards the hexagonal diamond phase at higher pressure.

As depicted in Figure 3 a, only when the combination of temperature and pressure surpasses the Berman-Simon line, the sp 3 bonding can be stabilized in the sp 2 structure.