The use of metallic silicon is widely used and is widely used in our daily life as well as in industry
Metal silicon is made of quartz and coke in the electric furnace smelting into the product, the main component of silicon content of about 98% (in recent years, containing 99.99% of Si is also famous in the metal silicon), the remaining impurities for the iron, aluminum , Calcium and so on.
One of the uses of metallic silicon: cermet, an important material for aerospace navigation. The metal silicon and metal mixed sintering, made of cermet composite material, it is high temperature, toughness, can be cut, both inherited the advantages of metal and ceramics, but also make up for both the inherent defects. Can be applied to the manufacture of military weapons The first space shuttle "Columbia" can withstand high-speed wear through the dense atmosphere of the high temperature caused by friction, thanks to its thirty thousand one thousand silicon tile into the shell.
The use of metal silicon two: excellent performance of silicon organic compounds. For example, metal silicon silicone plastic is an excellent waterproof coating material. Spraying silicone on the walls of the underground railway can solve the problem of water seepage once and for all. In the ancient artifacts, sculpture appearance, coated with a thin layer of silicone plastic, can prevent the moss breeding, against wind and rain and weathering. Tiananmen Square, the People's Heroes Monument, is the surface through the silicone plastic treatment, so always white, fresh.
The use of metal silicon three: high purity metal silicon is an important semiconductor material. In the monocrystalline silicon doped with a small amount of Group IIIA elements to form p-type silicon semiconductors; incorporation of trace elements of Group VA, the formation of n-type and p-type semiconductors together can be made of solar cells, the radiation energy Into electricity. In the development of energy is a very promising material.
The use of metallic silicon four: optical fiber communication, the latest modern means of communication. With the silicon metal to draw a high degree of transparency of the glass fiber, the laser in the glass fiber path, countless times the total reflection forward transmission, instead of bulky cable. Fiber optic communication capacity is high, a hair so fine glass fiber, you can also transmit 256 phone, it is not power, magnetic interference, not afraid of eavesdropping, with a high degree of confidentiality. Fiber communication will make the 21st century human life revolution.
Metallic silicon, also known as crystalline silicon or industrial silicon, originally belong to the chemical industry, and later the National Bureau of Statistics will be placed under the ferroalloy industry. Metal silicon for what industry, metal silicon purchase is divided into three industries: First, the silicone industry. Second, single crystal, polysilicon industry (but this industry is to buy a lot of trichlorosilane, trichlorosilane is a single crystal, polycrystalline industry upstream, but also with the production of metal silicon. Third, the smelting industry. , The amount is relatively small, the general situation is not directly purchased, but to buy other manufacturers processed out of the powder.
The use of metal silicon: metal silicon is the industrial purification of elemental silicon, mainly used in the production of silicone, the preparation of high purity semiconductor materials and the preparation of special-purpose alloys.
First, the production of silicone rubber, silicone, silicone and other organic silicon
Silicone rubber good elasticity, high temperature, for the production of medical supplies, high temperature washers and so on.
Silicone resin for the production of insulating paint, high temperature coatings.
Silicone oil is an oil, its viscosity is affected by the temperature is very small, for the production of high-level lubricants, polishing agent, fluid springs, dielectric liquid, etc., can also be processed into a colorless transparent liquid, as a senior waterproofing agent On the surface of the building.
Second, high purity monocrystalline silicon is an important semiconductor material
In the monocrystalline silicon doped with a small amount of Group IIIA elements to form p-type silicon semiconductors; incorporation of trace elements of Group VA, the formation of n-type and p-type semiconductors together can be made of solar cells, the radiation energy Into energy. In the development of energy is a very promising material.