Fused Silica Glass Properties

Fused silica is an amorphous grade of silica known for its low thermal expansion and thermal shock resistance.

Fused silica glass properties.

High chemical purity and resistance high softening temperature and thermal resistance low thermal expansion with high resistance to thermal shocks. It is made by melting high purity silica sands and has uses in refractories investment casting radar windows etc. Fused quartz or fused silica is glass consisting of silica in amorphous non crystalline form. Fused silica is difficult to fabricate and thus costs more than all the other glasses.

Properties of fused quartz silica is found almost everywhere in nature and represents almost 1 3 the mass of the earth s crust. A number of unique optical mechanical and thermal properties of fused silica have made quartz glass an indispensable material in the fabrication of high tech products. Fused silica is a noncrystalline glass form of silicon dioxide quartz sand. Fused silica glass is pure silicon dioxide 100 sio2 in the non crystalline state as well as silicon dioxide in the organic state and silicon oxide in the liquid state in this case a liquid.

Fused silica therefore has high working and melting temperatures. Transmission can be influenced by material purity and the method of manufacture. Aerospace agriculture aluminium production analytics automotive building materials ceramics chemicals coatings composites cosmetics dental electrochemicals electronics environmental protection food gastronomy glass hvac heating ventilating and air conditioning investment jewelry laboratory laser lighting measurement engineering medical technology metal microlithography mining and smelting. The optical properties of fused silica offer striking opportunities for research and industry.

This glass is composed exclusively of high purity silica sio2 in amorphous non crystalline form chemical propertie. The broad transparent transmission range covers the complete visible spectrum and extends far into the infrared and ultraviolet regions. It s highly cross linked three dimensional structure gives rise to it s high use temperature and low thermal expansion coefficient. Thermal properties typical data electrical properties typical data viscosity volume resistivity of n dielectric properties of n fused silica glass is a good electrical insulator retaining high resistivity and excellent high frequency characteristics at elevated temperatures.

Coefficient of expansion electrically fused quartz. Typical of glasses it lacks long range order in its atomic structure.