Quartz glass is a one-component glass (SiO2). It is one of the most valuable materials for both science and industry. There is a distinction between synthetic and natural quartz glass. Synthetic quartz glass is made from pure silicon tetrachloride (SiCl4) following the Flammpyrolyse-method. The raw material of quartz glass is a natural crystal mined from the earth as rock crystal or pegmatite quartz. The raw material is pulverized to a fine-particle granulate and melted to quartz glass in an oxy-hydrogen flame.
Features:
Good transmission behavior in ultra-violet, visible and infrared wavelengths
High temperature endurance
A low coefficient of thermal expansion
Good thermal shock resistance
Excellent electrical insulation
High chemical purity
A maximum operating temperature of 1100°C (permanently), or 1300°C (short-time)
Uses:
High-temperature processes (high temperature resistance)
Semiconductor- and light-industry (purity)
Optics (good light transmission in visible, UV and IF wavelengths)
Laser technology
Electronics and electro-technology (low conductivity, high penetration field strength, low dielectric loss factor)
Chemistry and pharmaceutics (chemical resistance, not hygroscopic, chemical purity, thermal shock resistance)
Other characteristics : absorbing electromagnetic emissions
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