Elevating Science: The Superiority of Fused Quartz in Laboratory Applications

At QSI Quartz, we are committed to enhancing scientific research through superior materials. Our focus today is on the remarkable capabilities of fused quartz and silica ware, which stand as the cornerstone of laboratory and industrial advancements.

Fused quartz, also known as fused silica or quartz glass, is an amorphous (non-crystalline) form of silicon dioxide (SiO2). This purity is what sets fused quartz apart from conventional commercial glasses that contain various additives to modify their properties. The high purity of fused quartz allows it to withstand extreme temperatures, making it unsuitable for everyday applications but ideal for specialized environments.

The terms “fused quartz” and “fused silica” might interchangeably refer to materials produced through different manufacturing processes, leading to variations in trace impurities. These impurities can influence the optical transmission properties, which is crucial for applications requiring precise light control, such as in UV and infrared spectra.

Product Quality and Applications of Quartz Glass

Quartz glass is produced by melting high-purity silica sand, which contains quartz crystals. While the primary components are silicon and oxygen, the process might introduce minor contaminants like aluminum and titanium. These impurities can affect optical transmission, especially at UV wavelengths. Another factor in the manufacturing process is the presence of water, which can lead to the formation of hydroxyl (OH) groups, thereby affecting infrared transmission.

Unique Properties and Uses

One of the most noteworthy properties of fused quartz is its incredibly low coefficient of thermal expansion. This property allows it to endure sudden and extreme temperature changes without cracking, making it an excellent material for applications such as the envelopes for halogen lamps and high-intensity discharge lamps. These lamps operate at high temperatures to deliver a combination of high brightness and longevity. Fused quartz’s excellent transmission of infrared light also makes it suitable for radiation cooling in high-power vacuum tubes.

In industrial settings, fused quartz is used as a raw material to fabricate various refractory shapes, including crucibles, trays, and rollers. These are essential for high-temperature processes like steelmaking, investment casting, and glass manufacturing. Thanks to its thermal shock resistance and chemical inertness, fused quartz interacts minimally with most elements and compounds. It is remarkably resistant to all acids except hydrofluoric acid, which is highly reactive even at low concentrations. For more insights into the applications and benefits of fused quartz in your specific field, visit our main website at QSI Quartz.