The purity of quartz glass is mainly determined by the raw material.The purity of quartz glass produced by high purity raw materials such as SiCl4 can reach 99.9999%,which mainly used in the production of optical fiber.The purity of the quartz glass produced by the purified high quality natural quartz can reach 99.99%, which is used in the semiconductor industry.The purity of quartz glass produced by high quality natural quartz is about 99.9%, which is used in the production of high strength electric light source.The 99% purity of ordinary quartz is generally used for the production of opaque quartz glass.
With the more understanding of the quartz glass, we have a new understanding about the purity of the quartz glass.Not all impurities are bad. The purity is not always the higher the better.People deliberately add some impurities to output specific performance products.If you add 8% the titanium oxide into quartz glass, it will have the performence of ultra low expansion. Ozone-free quartz glass is put into 200PPM of titanium oxide.Put both titanium and cerium can produce filter ultraviolet quartz glass.Quartz glass of adding germanium, boron and phosphorus is the basic material for the production of optical fiber.The erbium doped quartz glass is the core of the fabrication of the fiber amplifier.
Purity of all kinds of quartz glass:
| Li | Na | K | Fe | Al | Ca | Mg | Cu | Co | Mn | Ni | OH | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gas refining quartz glass A | 0.55 | 1.8 | 1.5 | 0.55 | 18 | 2.6 | 0.65 | 0.25 | 0.02 | 0.05 | 0.03 | 160 |
| Gas refining quartz glass B | 1.98 | 4.3 | 1.7 | 1.1 | 18 | 6.2 | 0.45 | 0 | 0 | 0 | 0.11 | 180 |
| Fused silica glass A | 2.65 | 8.7 | 6.7 | 3.3 | 20 | 8.8 | 0.91 | 0 | 0 | 0 | 0.13 | 5 |
| Fused silica glass B | 2.02 | 4.4 | 1.2 | 2.2 | 22 | 3.7 | 0.53 | 0.04 | 0.04 | 0.05 | 0.04 | 150 |
| Synthetic quartz glass | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.3 | <0.1 | <0.1 | <0.01 | <0.01 | <0.01 | 1200 |
