Russia successfully implemented liquid carbon characteristics research experiment
The High Temperature Joint Research Institute of the Russian Academy of Sciences successfully completed the liquid carbon characteristic experiment. Previously, computer modeling was required for similar experiments, because carbon only appears in liquid state under high temperature and pressure, but existing equipment cannot withstand such conditions.
According to the research funder, the Russian Science Foundation, a thin plate made of pyrolytic graphite was used in the experiment, sandwiched between two layers of sapphire plates, and pressurized by 0.3 to 2 GPa. In just 1 microsecond, the sample reached the melting point, melted and became hot in liquid form. At this time, the heat, pressure, volume of graphite, resistivity and temperature dispersed on the sample can be measured.
Researcher Anatoly Rachel said: "What surprised us is that the measured melting point of graphite is more than 1,000 degrees Celsius higher than what is generally believed. In addition, we found that the speed of sound in liquid carbon travels with carbon. The decrease in density accelerates. These experimental results can be used to study the evolution of carbon planets, or to improve the production technology of artificial diamonds and carbon nanotubes. "
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