At the other extreme there are forms of silica so rare that they are desirable for this reason alone: gemstone opal, agate and rhinestone.Ībout | Privacy Policy | Cookie Policy | Sitemap © copyright 2017. Other mined silicates are feldspars, nephenile, olivine, vermiculite, perlite, Sand is used as source of the silicon produced commercially. It constitutes 27,72% of the solid Earth’s crust, while the oxygen constitutes 46,6%, and the next element after The silicon is much more abundant than any other element, apart from the oxygen. Silicon is found in many dioxide forms and in uncountable variations from the natural silicates. Moreover, pentacoordinated and hexacoordinated silicon compounds are also known. Sometimes its bivalent, and it’s purely electropositive in its chemical behaviour. It is usually tetravalent in its compounds, although
It’s a metalloid with a marked metallic luster and very brittle. Silicon is the most abundant electropositive element in The Earth’s crust. Moreover, many useful organosilicic by-products. In metallurgy, it forms important commonly used compounds with hydrogen, carbon, halogens, nitrogen, oxygen and sulphur. Apart from metallic silicides, which are used in big quantities It is known that silicon forms compounds with 64 out of the 96 stable elements and possibly form silicides with other 18 elements. Melted quartz sands are transformed in silicon glasses which are used in laboratories and chemical plants, as well as in electric insulators.Ī colloidal dispersion of silicon in water is used as a coating agent and as ingredient for certain enamels. Silicon crystals are used for piezoelectric glasses. Silicon dioxide is used as raw material to produce elemental silicon and silicon carbide. Photovoltaic cells forĭirect conversion of solar energy use thin cut slices of simple silicon crystals of electronic grade. Silicon chips are used in integrated circuits. Silicon with 98-99% purity is used as raw material in the manufacture of organosilicic and silicon resins, seals and oils. It is a refractory material used in making enamels and pottery.Įlemental raw silicon and its intermetallic compounds are used as alloy integrals to provide more resistance to the aluminium, magnesium, copper and other metals. Silicon is also an importantĬonstituent of some steels and a major ingredient in bricks. Silicon is the principal component of glass, cement, ceramics, most semiconductor devices, and silicones, the latter a plastic substance often confused with silicon.
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