Experimental investigation of the thermal properties of carbon at high temperatures and moderate pressures

E.I. Asinovskii^a, A.V. Kirillin^b, A.V. Kostanovskii^b
^aInstitute for High Temperatures, Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 127412, Russian Federation
^bInstitute for High Energy Densities, Associated Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13/19, Moscow, 127412, Russian Federation

A consistent procedure for plotting the carbon melting and boiling coexistence curves based on published data and the authors’ experimental results is proposed. The parameters of a triple point are predicted to differ markedly from the currently accepted values: p_t \approx 1 bar and T_t \approx 4000 K. Two types of experimental facilities were used, with laser heating of samples in one and direct ohmic heating in the other. The existence of a carbyne region (a stable linear polymer consisting of carbon atoms) in the carbon phase diagram is discussed. Results on the direct solid-phase graphite-carbyne transition are presented, and this is shown to occur under certain conditions in the form of a thermal explosion.

PACS: 64.30.+t, 64.60.Kw, 64.70.Dv (all)
DOI: 10.1070/PU2002v045n08ABEH001110
URL: https://ufn.ru/en/articles/2002/8/d/
Web of Science

000179657600004
Citation: Asinovskii E I, Kirillin A V, Kostanovskii A V "Experimental investigation of the thermal properties of carbon at high temperatures and moderate pressures" Phys. Usp. 45 869–882 (2002)

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Оригинал: Асиновский Э И, Кириллин А В, Костановский А В «Экспериментальное исследование термических свойств углерода при высоких температурах и умеренных давлениях» УФН 172 931–944 (2002); DOI: 10.3367/UFNr.0172.200208e.0931