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Custom-made Ceramic
and Glass Components

Silicon

After carbon, silicon is the most abundant element on earth, the abundance being 277,000 ppm. It is generally present as a silicate, these being found in many rocks, clays and soils. Silicon is obtained by reducing silica (sand, SiO2) with carbon. Further purification of the element for applications requiring high-purity material (e.g. semiconductor devices) is achieved by zone refining, the resulting purity being better than 1:109. Silicon exists in two allotropic forms: brown silicon is a powder, whereas crystalline (metallic) silicon is grey and it is the latter that is more widely used. Bulk silicon is unreactive towards oxygen, water, acids (excluding HF), but is soluble in hot alkalis.

Silicon has many applications in various industries; for example, ultra-high-purity silicon is used in the semiconductor industry as a result of its semiconducting properties. Silicon is also used as an alloying element in the manufacture of certain alloys (e.g., ferrosilicon, an alloy of iron and silicon that is used to introduce silicon into steel and cast iron). It is also used in the manufacture of glass and often as an optical window in wafer form.

Characteristics of silicon include:

  • Wide transmission range
  • Low density
  • Cost-effective
  • Harder than germanium

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Buy standard Silicon products online

Goodfellow also offers a range of standard, semi-finished forms in our online catalog. To see our catalog, please follow the link below.

Silicon (Si)

Goodfellow Ceramic and Glass Division is able to supply a wide range of ceramic and glass materials as finished components. Our capabilities range from custom-made precision microcomponents with very high tolerance features to large heavy-duty components used in industrial applications. Additionally, standard semi-finished forms such as tubes, rods, bars, plates, crucibles and spheres are often available from our wide inventory. Please contact us with full details of your requirements, including drawings where available, and we will review and respond with a quotation as soon as possible.