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.
Sapphire rods display
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