1. superhard - Noun
2. superhard - Adjective
Having a very high hardness.
Highly strengthened against attack.
a superhard missile silo
(not comparable, mineralogy) Having a hardness between that of boron nitride and that of diamond.
superhard (plural superhards)
(motor racing) A tyre whose compound is harder than a normal hard tyre.
Katz, 372 Cmain solid is as soft as graphite, but when compressed to less than 70% of its volume it transforms into a superhard form of diamond (see aggregated diamond nanorod ). Source: Internet
The bulk modulus of superhard phase nanotubes is 462 to 546 GPa, even higher than that of diamond (420 GPa for single diamond crystal). citation Wettability The surface wettability of CNT is of importance for its applications in various settings. Source: Internet
However, these new superhard phase nanotubes collapse at an even higher, albeit unknown, pressure. Source: Internet
They then undergo a transformation to superhard phase nanotubes. Source: Internet