Highly pure fused quartz glass, it contains more than 99.99% SiO2, colorless, transparent, bubble-free, high transmission at UV and Visible spectrum. With excellent thermal performance and chemical performance, our quartz glass is widely used as a coating material to do the coating of the mirror surface and antireflection coating.
We can produce and process various shapes and sizes of quartz glass such as granular, sheet, ring, ball, and columnar. Also we supply instruments and parts made in quartz glass for vacuum coating machine.
(1) Quartz glass performance used for coating
Refractive index | 1.46021（wavelength 546.07nm） |
Transmission range | 200～2500nm |
Molecular weight | 60.06/mol |
Specific gravity | 2.202g/cm3 |
Stiffness (Mohs) （Knoop） | 5.5 ~ 6.5 |
416 Kg/mm2 |
Solubility | Insoluble in water，soluble in hydrofluoric acid |
Content of metal impurity （＜ppm） | Name | Fe | Ni | Cu | Ti | Mg | Cr |
Content | 2 | 1 | 1 | 1 | 1 | 1 |
Fusion temperature | 1710~1750℃ |
Evaporating temperature | 1600～2200℃ |
Evaporator source | EB |
Vapor tension | 1Pa ( At 2000℃) |
10pa ( At 2200℃) |
Features of coating flim | Minim-evaporization |
Vaporized by electron beam gun （Tension：5×10-3Pa） |
(2) Coating material shape and spec.（mm）
Shape | Spec. （mm） |
Granule | ﹤1 | 1～3 | 3～5 |
Sheet | ¢15.5×10 | ¢30×15 | ¢50×5 | ¢60×7 |
Ring | ¢212/¢170×15 | ¢300/¢230×15 | ¢335/¢265×15 |
Ball | ¢5 ¢3 |
Column | ¢5×5 ¢3×3 |
(3) Quartz glass parts for Vacuum Coating Machine and their Spec.
Product | Spec. （mm） |
Quartz glass crucible | ¢196×63 ¢286×104 |
Quartz class target material | 1016×136×6 ¢355×12 |
Quartz glass window | 725×320×28 360×320×16 |
(K9 Optical glass monitoring sheet) | ¢160/¢40×2 ¢142/¢80×1.8 |
