![]() ![]() Please refer to the part number list for more items. Fused silica is a good electrical insulator, retaining high resistivity at elevated temperatures and excellent high-frequency characteristics. Internal surface modification is available.Īvoid use with hydrofluoric or phosphoric acids, alkalis and alkali-metalized compounds as dissolution of silica glass and surface devitrification may occur.Uncoated, temperature resistant to 1,000˚C.Optical properties of uncoated – transparent above 180 nm. Fused-silica capillary gas chromatographic columns are universally used for analysis of drugs in forensic laboratories.Low weight loss (below devitrification temperature). Fused Silica is an entirely synthetic material, and is technically the purest glass.Impermeable to all gases (except H 2, He).Low dielectric constant, low dielectric loss.Polyimide coating is chemically resistant.Standard polyimide temperature resistance to +380˚C – equivalent to other high temperature polyimides.182, pp.Coated fused silica tubing exhibits excellent flexibility, chemical stability, tensile strength and exacting tolerances making it the tubing of choice for GC capillary applications, LC tubing and other micro tubing requirements. and Li, H., 2016, “Shear Modulus and Damping Ratios of Transparent Soil Manufactured by Fused Quartz”, Materials Letters, Vol. J., 2011, “A Transparent Sand for Geotechnical Laboratory Modeling,” Geotechnical Testing Journal, Vol. International Journal of Impact Engineering, Vol. Phenomenology of rapid projectile penetration into granular soils. Visualizing kinematics of dynamic penetration in granular media using transparent soils. Observations of projectile penetration into a transparent soil. A non viscous water-based pore fluid for modeling with transparent soils. International Journal of Impact Engineering, doi: 10.1016/j.ijimpeng.2016.02.015, Elsevier Soil-projectile interactions during low velocity penetration. Typical Shear Strength properties of Fused Quartz Fused quartz has been employed to investigate soil–geosynthetic interaction during pullout unsaturated flow, and penetration mechanics.įig. ![]() The static and dynamic properties of fused quartz are similar to those of angular natural sand (Fig. Ophthalmic chart is seen through a 5-cm-thick layer of fused quartzįused quartz possesses chemical composition and shape characteristics similar to those of natural silicate sand. The resulting model has exceptional transparency in which an ophthalmic chart is seen through a 5-cm-thick layer of fused quartz saturated with a mineral oil solution on top and a sucrose solution at the bottom (Fig. Moreover, the fluids employed are inert and non-toxic, which facilitate their use in research and educational settings. Our Fused Silica is over 99 amorphous and has an extremely low coefficient of thermal expansion and high resistance to thermal shock. Fused Silica is made from high purity silica, using unique fusion technology to ensure the highest quality. Metallic impurities and OH molecules are sources of absorption. Washington Mills is a supplier of fused silica. Typical of glasses, it lacks long range order in its atomic structure. The optimal performance depends on the absorption value of the specific fused silica grade. Fused silica is a noncrystalline (glass) form of silicon dioxide (quartz, sand). Absorption is the root cause of thermal lensing. The ability to model sand using two immiscible pore fluids permits modeling multiphase flow problems, coupled flow-deformation problems, as well as vadose area environmental hazard problems. For IR applications in the wavelength range from 780 - 3600 absorption can play a major role. The material can be matched with several pore fluids including (1) sucrose solution, (2) a blend of mineral oils similar to baby oil, and (3) sodium thiosulfate-treated sodium-iodide (STSI) as Shown in Fig. Several suppliers manufacture the material to a wide range of different particle size specifications. Crushed fused quartz is most often a byproduct of industrial processes for the manufacture of semiconductors, solar cells, telescope and microscope lenses, telecommunication equipment, and glass chemical containers. The melting process is conducted in a vacuum to pre- vent bubble formation, which helps enhance transparency. Crystalline silica (silicon dioxide, SiO2) is found in siliceous/quartzite sand and rock. High purity fused quartz is manufactured by melting naturally occurring crystal- line silica at temperatures in the range of 2,000 C. Fused quartz and fused silica are non-crystalline forms of silicon dioxide. Fused quartz is a modern transparent soil surrogate, used to represent the geotechnical properties of sand. ![]()
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