Uses of silicon metal
Silicon is widely used in smelting ferrosilicon alloy as an alloying element in the iron and steel industry, and as a reducing agent in the smelting of many kinds of metals. Silicon is also a good component in aluminum alloys, and most cast aluminum alloys contain silicon. Silicon is the raw material of ultra-pure silicon in the electronics industry. Electronic devices made of ultra-pure semiconductor monocrystalline silicon have the advantages of small size, light weight, good reliability and long life. High power transistors, rectifiers and solar cells made of silicon single crystals doped with specific trace impurities are better than those made of germanium single crystals. Amorphous silicon solar cell research progress quickly, the conversion rate of more than 8%. The maximum use temperature of silicon molybdenum rod electric heating element can reach 1700 ℃, which has the resistance not easy to age and good oxidation resistance. Trichlorosilane produced with silicon can be formulated with hundreds of silicone lubricants and waterproof compounds. In addition, silicon carbide can be used as abrasives, and quartz tubes made of high-purity silicon oxide are important materials for high-purity metal smelting and lighting. Paper in the eighties-silicon people call silicon "paper in the eighties". This is because paper can only record information, and silicon can not only record information, but also process information to obtain new information. The world's first electronic computer, manufactured in 1945, is equipped with 18000 electron tubes, 70000 resistors and 10000 capacitors. The whole machine weighs 30 tons and covers an area of 170 square meters, which is equivalent to the size of 10 houses. Today's electronic computers, due to technological advances and material improvements, can accommodate tens of thousands of transistors on a fingernail-sized silicon chip; and have a series of functions such as input, output, operation, storage and control information. Microporous silicon calcium insulation material microporous silicon calcium insulation material is a kind of excellent insulation material. It has the characteristics of small heat capacity, high mechanical strength, low thermal conductivity, non-burning, non-toxic and tasteless, cutting, convenient transportation, etc., and can be widely used in metallurgy, electric power, chemical industry, ships and other thermal equipment and pipelines. After testing, the energy-saving benefit is better than asbestos, cement, vermiculite and cement perlite insulation materials. Special silica-calcium material can be used as catalyst carrier, which is widely used in petroleum refining, automobile exhaust purification and other aspects.
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