Wurtzite Boron Nitride (w-BN) is a bit harder and stronger than diamonds. However, lonsdaleite (also called Hexagonal Diamond) is 58% harder than a diamond!
No, boron nitride is often used as an insulator in the semi-conductor industry.
No.
Diamond used to be the hardest mineral now Lansdaleite and wurtzite boron nitride which were found on a meteor are now harder.
NASA used Boron Nitride in many different ways. It was used as a catalyst when starting Saturn rocket engines. Boron Nitride is also used in one form to protect the outside of the spacecraft. Boron Nitride is one of the hardest chemicals known to man.
Boron nitride
BN
boronnitride is BN3
You think probable to boron nitride (borazon); but other nitrides (of titanium, zirconium, vanadium, niobium, etc.) are also very hard. But no one equal the hardness of diamond.
The hardest known substance that exists is diamond. However, one form of boron nitride is believed to be harder, but it remains theoretical.
This is Boron
compound