The formation of quartz glass is caused by the high temperature viscosity of its melt. It is widely used in the production of semiconductors, electro-optic sources, semiconducting communication devices, lasers, optical instrument, laboratory instruments, electrical equipment, medical equipment, high-temperature and corrosion resistant chemical instruments, chemical industry, electronics, metallurgy, building materials, national defense and other industries. Glass can be made into optical fiber. With the development of semiconductor technology, quartz glass is widely used in various processes of semiconductor production. For example, the Czochralski method converts polycrystalline silicon into monocrystalline silicon; The cleaning tank used for cleaning; The diffusion tube and groove boat used for diffusion; Clocks used for ion implantation, etc.

Quartz glass is a special type of glass that contains only a single component of silica. Due to different types, processes, and raw materials, they are often called silicate glass, quartz glass, fused silica, fused quartz, synthetic fused silica, and transparent, translucent, and opaque quartz with no clear concept. Quartz glass, commonly referred to as quartz glass in China, is classified by process method, purpose, and appearance, such as electrically melted transparent quartz glass, continuously melted quartz glass, gas melted transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, semiconductor quartz glass, electric light source quartz glass, etc. People are accustomed to using a simple term like 'quartz' to name this material, which is inappropriate because 'quartz' is a general term for crystalline silica, which differs in physical and chemical properties from glassy silica.

Quartz glass has very low coefficient of thermal expansion, high temperature resistance, good chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, good ultraviolet spectral transmission, visible light transmission and near-infrared spectral transmission, and has higher mechanical properties than ordinary glass. Therefore, it is one of the indispensable excellent materials in modern technologies such as space technology, atomic energy industry, national defense equipment, automation systems, as well as industries such as semiconductors, metallurgy, chemical engineering, electric light sources, communication, light industry, building materials, etc.