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Silicon metal

Silicon is also known as crystalline silicon or industrial silicon, and its main purpose is as an additive to non-ferrous alloys. The metal silicon is made from quartz and coke in the electric furnace. The content of the element silicon is about 98%.

A large amount of silicon is used as an alloy element in iron and steel industry, and it is used as reducing agent in many metal smelting. Silicon is also a good element in aluminum alloy, and most of the cast aluminum alloys contain silicon. Silicon is the raw material of ultra-pure silicon in electronic industry. The electronic devices made by ultra-pure semiconductor monocrystalline silicon have the advantages of small volume, light weight, good reliability and long life. High power transistors, rectifiers and solar cells made of silicon single crystal with specific trace impurities are better than those made with germanium single crystal. The research on amorphous silicon solar cells is progressing rapidly, and the conversion rate is above 8%. Silicon molybdenum rods highest use electric heating element temperature can reach 1700 ℃, has good resistance to aging and oxidation resistance. Several hundred kinds of silicone lubricants and waterproofing compounds can be prepared by using silicon trichlorohydrin. In addition, silicon carbide can be used as abrasive, and the quartz tube made of high purity silicon oxide is an important material for high purity metal smelting and lighting lamps. Paper in the eighties - silicon was called "the paper of the eighties". This is because paper can only record information, and silicon not only records information, but also processes information to obtain new information. The world's first electronic computer, built in 1945, has 18,000 tubes, 70,000 resistors and 10,000 capacitors. The machine weighs 30 tons and covers an area of 170 square meters, or 10 houses. Today's electronic computers, thanks to advances in technology and material improvements, can hold tens of thousands of transistors on a wafer of silicon, the size of a fingernail. And it has a series of functions such as input, output, operation, storage and control information. Microporous silicon calcium insulation material is a kind of excellent thermal insulation material. It has small heat capacity, high mechanical strength, low thermal conductivity, noncombustible, non-toxic, tasteless, can be cut, transportation is convenient wait for a characteristic, can be widely used in metallurgy, electric power, chemical industry, ship, etc all kinds of thermal equipment and pipe. The energy saving benefit is better than that of asbestos, cement, vermiculite and cement perlite. The special silicon calcium material can be used as catalyst carrier, which is widely used in oil refining and automobile exhaust purification.



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