Applications of Quartz Glass

        Quartz glass, also known as quartz crystal glass, is manufactured by melting materials rich in silicon dioxide—such as crystal, quartz, and silicon dioxide—at high temperatures. Its silicon dioxide content far exceeds that of ordinary glass, typically reaching 99.999%. Quartz glass possesses exceptional optical properties, exhibiting not only outstanding transmission of visible light but also transparency to ultraviolet and infrared radiation.

　　As an excellent acid-resistant material, quartz glass withstands sulfuric acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon, and sulfur at elevated temperatures—except for hydrofluoric acid and phosphoric acid above 300°C. Its chemical stability is 30 times that of acid-resistant ceramics and 150 times that of nickel-chromium alloys and ceramics. hydrochloric acid, aqua regia, neutral salts, carbon, and sulfur at elevated temperatures. Its chemical stability is 30 times that of acid-resistant ceramics and 150 times that of nickel-chromium alloys and ceramics. It exhibits high-temperature resistance, thermal shock resistance, and an exceptionally low thermal expansion coefficient.

　　Quartz glass exhibits exceptional electrical properties. At room temperature, its electrical resistance is 10 times that of ordinary glass, with negligible dielectric loss across all frequencies and high dielectric strength.

Quartz glass also resists cosmic radiation and is impervious to nuclear fission products.

Quartz glass is primarily used in electric light sources, semiconductors, and new optical technologies.

　　In new light sources: It is used in high-pressure mercury lamps, long-arc xenon lamps, iodine-tungsten lamps, thallium iodide lamps, infrared lamps, and germicidal lamps.

In semiconductors: It is an indispensable material in the production of semiconductor materials and devices, such as crucibles, boat holders, furnace core tubes, and bell jars for growing germanium and silicon single crystals.

　　In new technology fields: Leveraging its exceptional acoustic, optical, and electrical properties, it is used in radar ultrasonic delay lines, infrared tracking and direction finding, infrared imaging, communication systems, spectrometers, spectrophotometer prisms and lenses, reflective windows for large astronomical telescopes, high-temperature operation windows, reactors, and radioactive devices; Nose cones, nozzles, and antenna radomes for rockets and missiles; radio insulation components for satellites; radiation shielding; thermal balances; vacuum suction devices; precision casting applications.

　　Quartz boats are also utilized in: chemical engineering, metallurgy, electrical engineering, scientific research, and other fields.

In chemical engineering: Suitable for high-temperature combustion, cooling, and ventilation equipment resistant to acidic gases; evaporation of acidic solutions; cooling, absorption, and storage apparatus; preparation of distilled water, hydrochloric acid, nitric acid, sulfuric acid, and other physical-chemical laboratory supplies. In high-temperature applications: They serve as optical glass, crucibles for phosphor production, electric furnace core tubes, and gas combustion radiators. In optics: Quartz glass and quartz glass wool are used for rocket nozzles, spacecraft heat shields, and observation windows. In summary, with the advancement of modern science and technology, quartz glass finds increasingly widespread application across diverse fields.