Silicon carbide

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Silicon Carbide, sometimes mistakenly referred to by the trade name Carborundum. Silicon Carbide is widely used in the manufacture of heating elements, slide bearings, sealing rings, wear parts, sintering aids, crucibles, burner nozzles, heat exchangers. Silicon Carbide also has the resistivity necessary to perform as a semiconductor material.

Calcium silicon is also called calcium silicon alloy or ferro silicon calcium. It is a composite alloy mainly composed of silicon and calcium. As a ferroalloy, it also contains different impurities such as iron, aluminum, carbon, sulfur, and phosphorus. It has the form of a lump or powder.

Silicon carbide is the main raw material for manufacturing nonlinear semiconductor resistors. Monocrystals formed by reduction of silicon dioxide with carbon in electric furnaces are characterized by high heat resistance, high resistance to radiation, mechanical strength. The material, which is black due to aluminum impurities, is suitable for operation in aggressive environments.

Black silicon carbide is higher toughness than green silicon carbide with SiC purity 98%, it have been used for process glass, ceramic, stone, refractory materials, cast iron and other metal.

More crystal photos. This is just stunning in the way it captures and splits light. Sometimes, it just looks black, other times it explodes in a riot of colour. Best viewed LARGE

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In power electronics, semiconductors are based on the element silicon—but the energy efficiency of silicon carbide would be much higher. Physicists of the University of Basel, the Paul Scherrer Institute and ABB explain what prevents the use of this combination of silicon and carbon in the scientific journal Applied Physics Letters.

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