Metal silicon block, also known as crystalline silicon or industrial silicon, is a kind of industrially purified elemental silicon, suitable for manufacturing high-purity semiconductor devices. The grade of metal silicon can reach 99.999 (5N). It is mainly used to produce silicone materials for 3C industrial production. It can also be used as an additive for non-ferrous aluminum alloys in many aspects, such as producing aluminum alloys with special functions. Silicon is a non-metallic element, grey-blue, metallic, hard and brittle. The content of silicon is about 26% of the quality of the earth’s interior. Common well-known brands of metal silicon blocks are generally based on the iron, aluminum and calcium contained in metal silicon. Three primary impurity contents are classified. According to the content of iron group, aluminum and calcium in metallic silicon, metallic silicon can be divided into various grades such as 553, 441, 411, 421, 3303, 3305, 2202, 1101 and so on.
Silicon block applications: (1) Silicone, silicone resin, silicone oil and other silicon copper production. Silicone has good toughness and heat resistance, and is used to make medical supplies and high-temperature resistant gaskets. Silicone resin is used to produce conformal paint, high temperature resistant coatings, etc. Methyl silicone oil is an oil-soluble chemical substance, and its viscosity is not affected much by ambient temperature. It is used to produce lubricants, polishes, liquid torsion springs, electrolytic liquids, etc. It can also be made into a colorless transparent liquid and sprayed onto building surfaces as a medicine. (2) Produce high-purity semiconductor materials. The vast majority of contemporary integrated circuit chips are made of high-purity metallic silicon, which is an important raw material for optical fiber lines. It can be said that metal silicon blocks have become the prerequisite leading industry in the information age. (3) Preparation of aluminum alloy. Aluminum alloy profiles are silicon alloys containing a lot of metallic silicon. Silicon-aluminum alloys are a strong composite deoxidizer. Replacing pure aluminum in the steelmaking process can increase the usage rate of oxygen scavengers, purify molten steel, and improve the quality of steel. Aluminum has low density, low linear expansion coefficient, and good forgeability and wear resistance. The forged alloy castings have high impact resistance and good high-pressure density, which can greatly extend the service life. It is often used in the production of aerospace vehicles and automotive parts. Silicon-copper-nickel alloy has good weldability and is not likely to cause flames during collision. It has fireproof function and is suitable for making storage tanks.
