Silicon metal and its application

The nature of the metallic silicon is similar with germanium, lead, tin, with semiconductor properties. The earth's crust is extremely rich in silicon resources, only second to oxygen, a quarter of the total weight of crust, presence of silica or silicates. The most pure silicon mineral is quartz or silica. Two allotropes of silicon: a dark brown amorphous silicon powder, lively nature, can burn in air; the other is stable crystal (crystalline silicon). The general silica and quartz use for glass and other building materials, high-quality quartz for the production of alloys, metal, and single crystal.

According to metal powder exporter, a large number of silicon (metal silicon) used as an alloying element in a variety of metal smelting for smelting ferrosilicon alloy, as a reducing agent for the iron and steel industry. Silicon also a good ingredient in aluminum alloy, the vast majority of cast aluminum alloy containing silicon. Silicon is the raw material of ultra-pure silicon electronics industry, ultrapure semiconductor silicon electronic devices do have advantages of small size, light weight, good reliability and long life. Silicon single crystal doped with specific trace impurities made of high-power transistors, rectifiers and solar cells is better than made of germanium crystal. Amorphous silicon solar cell research in recent years progress, the conversion rate is up to 8%. Silicon molybdenum rod heating element maximum use temperature up to 1700 , the resistance is not easy to aging and good oxidation resistance. Hundreds silicone lubricant and waterproofing compounds, etc., can be formulated for the production of trichlorosilane with silicon. In addition, silicon carbide as the abrasive, high-purity silica quartz tube production of high purity metal smelting and lighting materials. People called silicon as “paper in eighties”. This is because the paper can only record information, while the silicon is not only able to record the information, can handle the processing of information in order to obtain new information.

The world's first electronic computer manufactured in 1945, equipped with 18,000 tubes, 70,000 resistors, 10,000 capacitors, the whole machine weighs 30 tons, covers an area of 170 square meters, equivalent to the size of 10 houses. While the computer today, due to advances in technology and the improvement of the material, in a fingernail-size silicon chip, can accommodate tens of thousands of transistors; and a series of functions such as input, output, computing, storage, and control information. The micropore CaSi insulation material the microporous CaSi insulation material is an excellent insulation material. It has a small heat capacity, high mechanical strength, low thermal conductivity, non-burning, non-toxic, tasteless, can be cut, easy to transport, and can be widely used in metallurgy, electric power, chemicals, shipbuilding and other thermal equipment and piping. After the test, the energy-saving benefits superior to asbestos, cement, vermiculite and cement perlite insulation materials. Special CaSi material can be used as a catalyst carrier, widely used in the petroleum refining, automobile exhaust purification, and other aspects.

Source:http://www.mhcmp.com