fused silica

About fused silica

Fused silica is a highpurity, amorphous form of silicon dioxide engineered for demanding hightemperature and precision applications. Produced by electrically fusing selected quartz and rapidly cooling the melt, it offers extremely low thermal expansion, excellent thermal shock resistance, high softening point and outstanding chemical inertness compared with conventional silica sand or glass.

Because of this unique property profile, fused silica is widely used in investment casting shells, precision foundry refractories, kiln furniture, slide gates, hightemperature linings, as well as in specialty glass, optics, semiconductor, photovoltaic and fibreoptic components where dimensional stability, purity and low thermal distortion are critica

Fused silica is used wherever very low thermal expansion, high purity and thermal shock resistance are required.

Hightemperature & refractories

• Investment casting shells and cores for precision castings (steel, superalloys, turbine parts).

• Refractory shapes, gunning mixes, kiln furniture, ladle and tundish linings, slide gates and burner blocks in steel and glass industries.

Glass, optics & photonics

• Optical windows, lenses, prisms and wafers for UV to IR applications (lasers, lithography, sensors).

• Semiconductor and photovoltaic components, crucibles and tubes requiring very low thermal expansion and high purity.

Industrial powders & fillers

• Fused silica powder as a lowexpansion filler in epoxy encapsulants, electronic packaging, potting compounds and engineering plastics to reduce CTE and improve dimensional stability.