Quartz Glass

Description

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)