Application value of metal silicon

A large amount of silicon is used for smelting into 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 single crystal 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. The research of amorphous silicon solar cells has progressed rapidly, and the conversion rate has reached more than 8%. The maximum operating temperature of the silicon molybdenum rod electric heating element can reach 1700 ℃, and it has resistance to aging and good anti-oxidation performance. Trichlorosilane, produced from silicon, can be formulated with hundreds of silicone lubricants and waterproofing compounds.

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 fixtures. Paper in the 1980s - Silicon Silicon is called "the paper of the 1980s". This is because paper can only record information, while 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 18,000 tubes, 70,000 resistors and 10,000 capacitors. The whole machine weighs 30 tons and covers an area of ​​170 square meters, equivalent to the size of 10 houses. Today's electronic computers, due to the advancement of technology and the improvement of materials, can accommodate tens of thousands of transistors on a silicon chip the size of a fingernail; and have a series of functions such as input, output, calculation, storage and control information.

Microporous silica-calcium thermal insulation material Microporous silicon-calcium thermal insulation material is an excellent thermal insulation material. It has the characteristics of small heat capacity, high mechanical strength, low thermal conductivity, non-flammable, non-toxic and tasteless, can be cut, and easy to transport. After testing, the energy saving effect is better than that of thermal insulation materials such as asbestos, cement, vermiculite and cement perlite. Special silicon-calcium materials can be used as catalyst carriers and are widely used in petroleum refining, automobile exhaust purification and other aspects.