[SMM Flash] Researchers have reported new experimental measurements of tantalum under extreme pressure and temperature conditions in a study accepted by the American Physical Society's Physical Review B on September 1. The researchers combined temperature measurements with simultaneous X-ray diffraction after shock compression and release. The body-centred cubic tantalum phase was observed at 142 GPa, while the experiments constrained melting behaviour at pressures up to 142 GPa and temperatures reaching approximately 5,880 K.
The research does not indicate an immediate change in tantalum supply, demand or prices, but improves understanding of the metal's behaviour under extreme operating conditions. Tantalum's high melting point, corrosion resistance and thermal stability support its use in demanding technological applications, and more accurate phase-boundary data can improve material modelling under extreme environments. The study provides a framework for further temperature measurements of materials subjected to laser-driven dynamic compression.

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