Transparent quartz glass is extremely pure SiO2 and contains almost no impurities. It is an indispensable material for the semiconductor industry in cyanosis and tubes for silicon, land for potassium alloys, and other high-purity metal manufacturing equipment. The main varieties are large-size quartz glass bell jars (the outer cover of polysilicon furnaces).
In the past, impermeable steel was used, which affected the product quality, and the furnace shell needed to be cooled by water. Now it is changed to quartz glass bell jars without water cooling.
• It saves energy and improves the quality of polycrystalline silicon.
• When polycrystalline silicon is used to manufacture monocrystalline silicon, a large amount of quartz glass ground is used, which is an indispensable material, and there is no other material to replace it.
• when silicon single crystal is used to manufacture integrated circuits and transistors, Quartz glass expander or quartz glass bell jar is used for epitaxy, expansion, sintering and other processes.
• In addition, quartz glass holders are also used to clean silicon wafers.
Therefore, the semiconductor industry needs to use a large number of quartz glass tubes of various specifications of quartz rods, quartz earthworms and quartz glass instruments.
| Property | Typical Values |
| Diameter | 10mm-600mm |
| Length | 10mm-1000mm |
| Width | 10mm-1000mm |
| Thickness | 0.5mm-60mm |
| Color | clear/transparent |
| Sio2 | ＞99.9% |
| Density | 2.2×10³kg/m² |
| Moths hardness | 5.3~6.5(moths scale) |
| Compressive strength | ＞1.1×109 pa |
| Coefficient of thermal expansion | 5.5×10-7cm/cm℃ |
| Temperature for a short time | 1200℃ |
| Temperature for a long time | 1100℃ |
| Softening point | 1730℃ |
| Annealing point | 1250℃ |
| Index of refraction | 1.4585 |
| Transmittance rate | 85% |
CUSTOM SEMICONDUCTOR QUARTZ FROM SHENGTANG
|
Element |
Fe | Ca | Cu | Ti | Al | Na | Li | K | Mg | Ba | Ni |
| Level | ≤1.2 | ≤1.0 | ≤0.1 | ≤4 | ≤30 | ≤5 | ≤3 | ≤5 | ≤0.5 | ≤0.5 | 5 |
Shengtang Quartz Glass is able to custom various high purity quartz products for semiconductor industry. With years experience of semiconductor quartz manufacturing, we would like to provide any professional assistance to customers who're interested in our products. Please feel free to contact us to get extre help at any time.
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