| chem. | диборид рения | rhenium diboride (Rhenium diboride (ReB2) is a synthetic high-hardness material that was first synthesized in 1962.] The compound is formed from a mixture of rhenium, noted for its resistance to high pressure, and boron, which forms short, strong covalent bonds with rhenium. It has regained popularity in recent times in hopes of finding a material that possesses hardness comparable to that of diamond.  wikipedia.org 'More) |