File:Carbon basic phase diagram.png

Theoretical phase diagram of carbon, which shows the state of matter for varying temperatures and pressures. The hatched regions indicate conditions under which one phase is metastable, so that two phases can coexist.

Accurate illustration but not a pixel-exact plot. Also note that a considerable disagreement exists between theory and experiment, e.g., for the triple point doi: 10.1016/0008-6223(76)90010-5

Adapted from a diagram at J.M. Zazula, On Graphite Transformations at High Temperature and Pressure Induced by Absorption of the LHC Beam, 1997 as based on:

• F.P. Bundy, Pressure-Temperature Phase Diagram of Elemental Carbons, Physica A 156, 169 (1989).
• J. Steinback et al., A Model for Pulsed Laser Melting of Graphite, J. Appl. Phys. 58 (11), 4374 (1985).

Source: English Wikipedia, original upload 16 April 2005 by Femto

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