No, boron nitride is often used as an insulator in the semi-conductor industry.
No.
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
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.
This is Boron
boron nitride
Heterodiamond
compound
Formula: BN
Formula: BN