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What is fused silica used for?

What is fused silica used for?

Fused silica and quartz are used in the manufacture of many optical parts—such as lenses, mirrors, UV and IR transmitting optics, and metrology components—due to their ability to transmit light in the visible, ultraviolet, and infrared range. Semiconductors.

What are fused silicates?

Fused silica (fused silicon dioxide) is silica glass (amorphous). In contrast to the presence of other ingredients in common glasses for reducing the melting temperature, fused silica has no other ingredient. As a result, fused silica has high-working and melting temperatures.

Is fused silica the same as quartz?

The terms “fused silica” and “fused quartz” are often used interchangeably. More accurately, “fused quartz” refers to an amorphous solid formed by melting naturally-occurring quartz. So, while fused silica is ostensibly pure SiO2, fused quartz contains impurities depending on the quartz that was used.

What is fused silica substrate?

Optical grade Fused Silica is a high purity synthetic amorphous silicon dioxide which is manufactured by flame hydrolysis. Some beneficial characteristics indlude very low thermal expansion coefficient, very good homogeneity with excellent optical properties and exceptional transmittance in the UV range.

Is fused silica a ceramic?

Silicon oxide ceramics (SiO2) (also known as fused silica ceramics or quarzware5) are sintered from (amorphous) silicon dioxide powders.

How is fused silica made?

Fused silica, often referred to as synthetic quartz, is created by using high purity silica sand that has been manufactured from SiCL4, resulting in a transparent glass with an ultra-high purity and improved optical transmission.

Is fused silica fragile?

Fused Silica shows an almost perfect brittle-elastic behavior at temperatures lower than the transformation point. Fused Silica elasticity modulus is 73 GPa at 25ºC.

Is silica toxic to humans?

Silica gel is non-toxic but it is a choking hazard for young children. However, in some rare instances, manufacturers coat silica gel in cobalt chloride, a toxic compound. Eating cobalt chloride-coated silica gel will likely cause nausea and vomiting.

How is UV fused silica made?

UV grade fused silica is manufactured synthetically through the oxidation of high purity silicon by flame hydrolysis. The UV grade demonstrates high transmittance in the UV spectrum, but there are dips in transmission centered at 1.4µm, 2.2µm, and 2.7µm due to absorption from hydroxide (OH-) ion impurities.

Is fused silica porous?

It can be manufactured in various forms such as cylinders and plates with plate diameters up to 300 mm. Furthermore, complex shapes can be manufactured by fusing parts with quartz glass parts. This tough, porous silica material is made from spherical, high-purity silica glass grains.

Is silica a glass?

Silicon glass – also called quartz or silica, is a type of premium glass made almost exclusively of pure silica. Silicon dioxide (SiO2) accounts for as much as 99.9% of the raw material weight and determines the utility value of the material.

Is fused silica piezoelectric?

SiO2 can also be grown as a single crystal. The crystal offers some piezoelectric features.