Abstract
The NIRIM two-stage light–gas gun was installed in 1994 and has been developed to generate subtera Pascal dynamic pressures. We present recent progress in the gun operation using hydrogen as a driving gas. During the course of test shots, Hugoniots of SiC and TiC carbides have been determined. The Hugoniot measured for SiC indicates a phase transition of around 100 GPa. TiC does not display any transition up to 200 GPa. Considering the Si–C system at very high pressures, the present results on the transition in SiC suggest that the post-diamond phase of C may exist over 1 TPa and that it may possess a simple cubic structure. The results on TiC suggest that 6-fold coordinated carbon is stable over a wide range of pressure. This is not inconsistent with recent results of computer simulations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
