Silicon is one of the semi-metallic, formerly often known as Si. Melting point is 1420 , the density is 2.34 g / cm 3. Hard and brittle. At room temperature, dissolved in acid, soluble in alkali.
The nature of the metallic silicon is similar with germanium, lead, tin, with semiconductor properties. The earth’s crust is extraordinarily rich in silicon sources, only second to oxygen, a quarter of the full weight of crust, presence of silica or silicates. Probably 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 constructing materials, excessive-high quality quartz for the production of alloys, steel, and single crystal.
In keeping with metal powder exporter, numerous silicon (metallic silicon) used as an alloying element in a wide range of metal smelting for smelting ferrosilicon alloy, as a lowering agent for the iron and steel trade. Silicon also a superb ingredient in aluminum alloy, the vast majority of solid aluminum alloy containing silicon. Silicon is the raw material of ultra-pure silicon electronics business, ultrapure semiconductor silicon digital devices do have advantages of small size, light weight, good reliability and lengthy life. Silicon single crystal doped with particular trace impurities made of excessive-energy transistors, rectifiers and solar cells is best than made from germanium crystal. Amorphous silicon photo voltaic cell research lately progress, the conversion fee is up to eight%. Silicon molybdenum rod heating ingredient most use temperature up to 1700 , the resistance will not be easy to aging and good oxidation resistance. A whole lot silicone lubricant and waterproofing compounds, and so on., could be formulated for the manufacturing of trichlorosilane with silicon. As well as, silicon carbide because the abrasive, excessive-purity silica quartz tube manufacturing of high purity metallic smelting and lighting supplies. People referred to as silicon as paper in eighties. It is because the paper can solely file info, whereas the silicon is just not only capable of record the data, can handle the processing of information so as to obtain new data.
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 space of 170 square meters, equal to the dimensions of 10 houses. While the pc in the present day, on account of advances in technology and the development of the material, in a fingernail-dimension silicon chip, can accommodate tens of hundreds of transistors; and a sequence of capabilities corresponding to enter, output, computing, storage, and management information. The micropore CaSi insulation material the microporous CaSi insulation material is an excellent insulation material. It has a small heat capacity, high mechanical energy, low thermal conductivity, non-burning, non-toxic, tasteless, might be cut, simple to transport, and will be widely used in metallurgy, electric energy, chemicals, shipbuilding and different thermal tools and piping. After the take a look at, the power-saving benefits superior to asbestos, cement, vermiculite and cement perlite insulation materials. Particular CaSi materials can be utilized as a catalyst service, extensively used within the petroleum refining, vehicle exhaust purification, and different aspects.