a very hard, insoluble, crystalline compound, SiC, used as an abrasive and as an electrical resistor in objects exposed to high temperatures.
an extremely hard bluish-black insoluble crystalline substance produced by heating carbon with sand at a high temperature and used as an abrasive and refractory material. Silicon carbide whiskers have a high tensile strength and are used in composites; very pure crystals are used as semiconductors. Formula: SiC
- Silicon-controlled rectifier
noun 1. a semiconductor rectifier whose forward current between two electrodes, the anode and cathode, is initiated by means of a signal applied to a third electrode, the gate. The current subsequently becomes independent of the signal. It is a type of thyristor SCR
noun, Chemistry. 1. silica. noun 1. the dioxide form of silicon, SiO 2 , occurring especially as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives. noun 1. the dioxide of silicon, occurring naturally as quartz, cristobalite, and […]
noun, Chemistry. 1. any of a number of polymers containing alternate silicon and oxygen atoms, as (–Si–O–Si–O–) n, whose properties are determined by the organic groups attached to the silicon atoms, and that are fluid, resinous, rubbery, extremely stable in high temperatures, and water-repellent: used as adhesives, lubricants, and hydraulic oils and in electrical insulation, […]
noun 1. any of the synthetic rubbers made from silicone elastomers.