(Trade mark) An abrasive composed of silicon carbide crystals.
polishing substance compounded of silicon and carbon.
Trademark for a very hard, black abrasive, consisting of silicon carbide (SiC), an artificial compound of carbon and silicon. It is harder than corundum but not as hard as diamond.
It was first produced 1891 by US chemist Edward Acheson (1856–1931). + prikaži više