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Fused silica is a high-purity form of silicon dioxide, produced by melting high-quality silica sand in an electric arc furnace. This process results in a glass-like material that is known for its excellent thermal stability, low thermal expansion, and high chemical resistance. Fused silica is typically used in applications that require high performance and durability, such as in the manufacturing of glass, ceramics, and various industrial components.
| Purity | 99.8% SiO2 or higher |
| Melting Point | Approximately 1710°C |
| Density | 2.2 g/cm³ |
| Thermal Expansion Coefficient | 0.5 x 10^-6 /°C |
| Color | Transparent to translucent |
When selecting fused silica, buyers should consider the purity level required for their specific application, as higher purity may be necessary for sensitive uses like electronics or optics. It is also important to specify the desired form, such as powder, granules, or blocks, and any specific thermal or chemical resistance properties needed. Quantities should be discussed based on project requirements, and certifications may be requested for quality assurance.
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Fused silica offers superior thermal stability and low thermal expansion, making it ideal for high-temperature applications.
Yes, fused silica is widely used in the semiconductor industry due to its high purity and excellent optical properties.
Fused silica is available in various forms including powders, granules, and solid blocks.
Fused silica has a higher purity and better thermal properties compared to traditional crystalline silica.
Yes, fused silica is often used in refractory materials due to its high melting point and thermal stability.
Fused silica is used in glass manufacturing, ceramics, semiconductors, and optical applications.