Sapphire rods tips customized polished optical rods premium micro sapphire rods
Sapphire rod is a cylindrical material made of high purity single crystal sapphire (Al₂O₃), which is widely used in semiconductor, photoelectric and scientific research fields due to its excellent physical and chemical properties. Its high hardness, high temperature resistance, corrosion resistance and excellent optical properties make it an ideal material for semiconductor manufacturing and high-end devices.
Sapphire rods Features
1. High hardness and wear resistance: sapphire has a Mohs hardness of 9, second only to diamond, which can resist mechanical wear and prolong service life.
2. High temperature resistance: sapphire rod can work stably in high temperature environment below 2000°C, suitable for semiconductor high temperature process.
3. Excellent chemical stability: Strong corrosion resistance to acids, alkalis and most chemical solvents, suitable for harsh chemical environments.
4. High transmittance: Excellent optical transmittance in the ultraviolet to infrared band, suitable for optical and photoelectric applications.
5. Low coefficient of thermal expansion: Low coefficient of thermal expansion ensures dimensional stability in high temperature environment and reduces deformation caused by thermal stress.
Sapphire rods data
| Chemical formula | Al2O3 |
| Crystal class | Hexagonal system, rhomboidal class 3m |
| Density, g/cm3 | 3.98 |
| Melting point, °K | 2303 |
| Optical transmission range, µm | 0.17 - 5.5 |
| Refractive index at 0.532 µm | n0=1.7717, ne=1.76355 |
| Water absorption | nil |
| Young Modulus, Gpa | 345 |
| Shear Modulus, Gpa | 145 |
| Bulk Modulus, Gpa | 240 |
Sapphire rods application
1. Semiconductor manufacturing:
· Wafer processing: Support rods for wafer cutting, grinding and polishing to ensure high precision machining.
· High temperature furnace tube: as a support or guide rod in high temperature furnace, resistant to high temperature and corrosive gases.
2. Photoelectric equipment:
· LED manufacturing: Used for substrate support rods in MOCVD equipment to ensure uniform epitaxial growth.
· Laser: As a support rod for optical components in lasers, providing high stability and optical performance.
3. Scientific research experiments:
· High temperature experiment: as a sample support rod under high temperature environment, to ensure the stability and accuracy of the experiment.
· Vacuum equipment: Support or guide rods used in vacuum chambers to withstand extreme environments.
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