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For questions about gas pressure, or the effect of pressure in general on chemical species, substances, or reactions.
22
votes
Aside from carbon, what other substances can be made "superhard"?
The pressure (and temperature) are not the reason why they're hard, only the reason why they are formed. … This material, dubbed Q-carbon, was discovered in 2015, and is even created at atmospheric pressure, and around 4000 K with the help of a laser pulse. …