Silica SiO2

Silica SiO2

Silica is a chemical compound, silicon dioxide, and a mineral of formula SiO2, current and very hard. It represents more than 60% of the mass of the earth's crust. Silica SiO2 is chemically stable and hardly attacked by hydrofluoric acid, a reaction used in glass etching.

Silica exists in several crystalline forms including:

  • Quartz, the most widespread species in nature
  • Tridymite (melting point 1670°C)
  • Cristobalite (melting point 1713°C)
  • In amorphous form: silica glass or vitreous silica

Each of the crystallized forms has several varieties. The transition from one species to another results in dimensional variations, some of which are important at the scale of ceramic materials. This often results in thermal shock fragility and other phenomena due to expansion tension.

The stability of the species will depend on the temperature range to which they are subjected, the fineness of the grains, the cooking atmosphere and the presence of other oxides acting as catalysts (mainly the alkalis: K2O, Na2O, Li2O and also alkaline-earths with CaO) also called "mineralisers".

We can provide our skills for any technical advice or projects when it comes to specific shapes: machining, manufacturing, analysis, thermal analysis, and more.

Do not hesitate to get in touch with our engineers.

Machinable porous silica

Cotronics® Rescor® 310M is a 99% porous silica ceramic, easy to machine, porous silica board resist to 1650°C maximum.
Full description

SiO2 Castable Cement

Final Advanced materials provides Cotronics high temperature castable ceramic cement for applications up to 2200°C.
Full description

SiO2 Ceramic Adhesive

Ceramic adhesives can be used up to 2000°C. Final Advanced Materials provides a wide range of ceramic adhesives Cotronics.
Full description

SiO2 embedding cement

Final Advanced materials provides Cotronics high temperature Embedding ceramic cement for applications up to 1850°C
Full description