碳化矽,金剛矽
Carborundum \Car`bo*run"dum\, [Carbon + corundum.] A beautiful crystalline compound, {SiC}, consisting of carbon and silicon in combination; carbon silicide. It is made by heating carbon and sand together in an electric furnace. The commercial article is dark-colored and iridescent. It is harder than emery, and is used as an abrasive.
carborundum n : an abrasive composed of silicon carbide crystals