WSuperhard material
WAggregated diamond nanorod
WBARS apparatus
WBeta carbon nitride
WBoron carbide
WBoron nitride
WCemented carbide
WChromium(II) carbide
WCorundum
WDiamond-like carbon
WGraphene
WLonsdaleite
WMaterial properties of diamond
WOsmiridium
WOsmium borides
WRhenium diboride
WRuby
WRuthenium boride
WSapphire
WSialon
WSilicon carbide
WSilicon nitride
WStishovite
WTantalcarbide
WTantalum boride
WTantalum carbide
WTitanium carbide
WTitanium diboride
WTitanium nitride
WTungsten borides
WTungsten carbide
WVanadium carbide
WYogo sapphire
WZirconium carbide
WZirconium nitride