The interstitial alloy between carbon and iron has a complex phase diagram. A compound, Fe 3 C with the fixed composition Fe-6.7 wt % C bounds one end of this diagram and pure iron the other end. Pure ...

To create BC8, an eight-atom body-centered cubic crystal ... it may exist in carbon-rich exoplanets.” “The BC8 phase of carbon at ambient conditions would be a new super-hard material that ...