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Formation and use of quartz tubes


The formation of quartz glass is the result of its high viscosity at high temperature. Used in the production of semiconductors, electro-optical sources, semi-conductive communication devices, lasers, optical instruments, laboratory instruments, electrical equipment, medical equipment and high temperature and corrosion-resistant chemical instruments, chemical, electronics, metallurgy, building materials and national defense and other industries, the application is very extensive. Glass can be made of optical fiber, with the development of semiconductor technology, quartz glass is widely used in the process of semiconductor production. For example, the Czochralski method converts polycrystalline into monocrystalline silicon. Cleaning tank used for cleaning; Diffusion tube and grooving boat used for diffusion; Bell jar used for ion implantation, etc.

Quartz glass is a special glass containing only a single component of silicon dioxide. Due to the different types, processes and raw materials, foreign countries are often called silicate glass, quartz glass, fused quartz, fused quartz, synthetic fused quartz, and transparent, translucent and opaque quartz without a clear concept. China is collectively referred to as quartz glass, which is classified according to the process method, use and appearance, such as electrofused transparent quartz glass, continuous fused quartz glass, gas-refined transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, semiconductor quartz glass, quartz glass, electric light source quartz glass, etc. People are used to naming this material with a simple word "quartz", which is inappropriate, because "quartz" is a general term for crystalline silica, which is different from glassy silica in physical and chemical properties.

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

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