The content of silicon element in metallic silicon powder
Silicon metal powder is made of silicon metal, and silicon metal is also known as crystalline silicon or industrial silicon, its main use is as an additive for non-iron base alloy. Silicon metal is made of quartz and coke smelted in an electric furnace products, the main component of silicon element content in about 98% (in recent years, containing Si content of 99.99% is also included in the silicon metal), the other impurities for iron, aluminum, calcium and so on.
Semiconductor silicon A high purity silicon metal used to make semiconductor devices. It is polycrystalline, single crystal form sold, the former is cheap, the latter is expensive. Because of its different uses and divided into a variety of specifications. The properties of silicon metal and germanium, lead, tin similar, with semiconductor properties. Silicon is abundant in the earth's crust, second only to oxygen and accounting for more than a quarter of its total weight, in the form of silicon dioxide or silicate. Silicon has two allotropes: one is a dark brown amorphous powder that is active and burns in the air; The other is a stable crystal (crystalline silicon). Common silica and quartz are used in glass and other building materials, while high-quality quartz is used in alloys, metals and monocrystalline silicon.
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