Applications of Quartz Glass
发布时间:2026-07-23
Author: Ao Bo Quartz
Quartz boats, also known as quartz glass, are produced by high‑temperature melting of silica‑rich materials such as crystal and quartz. Their silica content is significantly higher than that of ordinary glass; typically, quartz glass contains 99.999% silica. Quartz glass exhibits excellent optical properties: it not only boasts exceptionally high visible‑light transmittance but also transmits ultraviolet and infrared radiation.
Quartz glass is an excellent acid-resistant material. Except for hydrofluoric acid and hot phosphoric acid above 300°C, it exhibits remarkable resistance to sulfuric acid, nitric acid, hydrochloric acid, aqua regia, neutral salts, carbon, and sulfur at elevated temperatures. Its chemical stability is approximately 30 times that of acid‑resistant ceramics and 150 times that of nickel‑chromium alloys and ceramics. It also boasts superior high‑temperature performance, excellent thermal shock resistance, and an exceptionally low coefficient of thermal expansion.
Quartz glass exhibits excellent electrical properties: at room temperature, its resistivity is approximately ten times that of ordinary glass, it exhibits very low dielectric losses across all frequencies, and it possesses a high dielectric strength.
Quartz glass also exhibits resistance to cosmic radiation and is impermeable to nuclear fission products.
Quartz glass is primarily used in electric lighting, semiconductors, and emerging optical technologies.
In the field of new light sources: manufacturing high-pressure mercury lamps, long-arc xenon lamps, iodine‑tungsten lamps, thallium‑iodide lamps, infrared lamps, and germicidal lamps, among others.
In the semiconductor field, these materials are indispensable in the production of semiconductor materials and devices, such as crucibles for growing germanium and silicon single crystals, boat dishes, furnace core tubes, and bell jars.
In the field of new technologies, its outstanding acoustic, optical, and electrical properties are utilized in ultrasonic delay lines for radar, infrared tracking and direction-finding, infrared imaging, communication systems, prisms for spectrographs and spectrophotometers, lenses, reflecting mirrors for large astronomical telescopes, high‑temperature work windows, reactor and radioactive‑material containment structures, as well as nose cones, nozzles, and radomes for rockets and missiles; radio‑insulating components and radiation‑shielding parts for artificial satellites; thermal balances; vacuum‑adsorption devices; precision casting, and more.
Quartz boats are also used in the chemical, metallurgical, electrical, and research fields.
In the chemical industry, it can be used for combustion, cooling, and ventilation systems that withstand high‑temperature, acid‑resistant gases; for evaporating acidic solutions; for cooling and gas‑absorption equipment; for storage vessels; and for preparing distilled water, hydrochloric acid, nitric acid, sulfuric acid, and other physicochemical reagents. In high‑temperature applications, it serves as material for optical glass, crucibles, fluorescent materials, and electric furnace heating elements, as well as for gas‑combustion radiators. In optics, quartz glass and quartz glass wool are employed in rocket nozzles, spacecraft heat shields, and observation windows, among other uses. In short, with the advancement of modern science and technology, quartz glass has found increasingly broad applications across a wide range of fields.
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