Quartz glass is formed due to the high viscosity of its melt at high temperatures. Quartz glass is widely used in semiconductors, semiconductor communication devices, optical instruments, laboratory instruments, lasers, electrical equipment, medical equipment and high temperature and corrosion resistant chemical instruments, chemical industry, electronics, metallurgy, building materials and national defense. and other industries. With the advancement and development of semiconductor technology, quartz glass is also widely used in various semiconductor production processes. For example, the Czochralski method converts polycrystalline silicon into monocrystalline silicon; cleaning tanks for cleaning; diffusion tubes for diffusion; bell jars for ion implantation, etc.

Quartz glass is a special glass that contains only silicon dioxide. Due to different types, processes and raw materials, it is often called quartz glass, fused quartz, fused quartz, synthetic fused quartz, silicate glass, and transparent, translucent and opaque quartz without a clear concept. It is collectively referred to as quartz glass in our country, and it is mostly classified according to the process, use and appearance, such as: fused transparent quartz glass, continuous fused quartz glass, gas-fused transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, semiconductor Use quartz glass, quartz glass for electric light source, etc. People are used to naming this material with a simple word like "quartz", which is inappropriate because "quartz" is a general term for a crystal state. Silica, whose physicochemical properties are similar to glassy silica. They are different.

Quartz glass has extremely low thermal expansion coefficient, high temperature resistance, good chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, good ultraviolet spectrum performance and visible light and near infrared spectrum performance. And has higher mechanical properties than ordinary glass. Therefore, it is one of the indispensable excellent materials in modern space technology, atomic energy industry, national defense equipment, automation system, semiconductor, metallurgy, chemical industry, electric light source, communication, light industry, building materials and other industries.