Polished Sapphire Tube Single Crystal Al₂O₃ Tubular Optical Component
Sapphire polished tubes are transparent tubular optical components fabricated from high-purity single-crystal aluminum oxide (α-Al₂O₃) through precision cold working and double-sided polishing. Their core advantage lies in combining sapphire's inherent material properties with advanced machining techniques to meet extreme environmental demands for optical, mechanical, and chemical performance.
ZMSH's Service Highlights:
- Full-size Customization: Supports outer diameter ranges of 2–300 mm, inner diameter of 0.1–25 mm, and length of 5–320 mm, with wall thickness tolerance of ±0.01 mm. Complex structures (e.g., localized steps, drilled holes) are achievable.
- Multi-Material Integration: Offers standard sapphire tubes and hybrid structures (e.g., tungsten-copper encapsulation) alongside multi-layer coatings (AR/HR/anti-fog).
- Rapid Delivery: From design to mass production in 2–4 weeks, accommodating small-batch prototypes and large-scale manufacturing. Emergency orders can be expedited to 7 days.
Polished Sapphire Tubes Technical Specifications
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Parameter
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Sapphire Polished Tube
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Hardness (Mohs)
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9
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Max Temperature
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1900°C
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Transmittance @550nm
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>92%
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100 MPa
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Thermal Conductivity
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35 W/m·K
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Polished Sapphire Tubes Core Characteristics
Material Properties:
- Ultra-High Hardness: Mohs hardness of 9 (second only to diamond), 5× scratch resistance compared to quartz, and extended wear life.
- Broad-Spectrum Transmission: 200 nm (UV) to 5.5 μm (mid-IR) full-wave transmission, with >92% visible light transmittance without coatings.
- Extreme Durability:
- Temperature: Melting point of 2050°C, short-term tolerance up to 1900°C (e.g., molten metal observation), long-term use up to 1800°C.
- Chemical Resistance: Withstands strong acids (except HF), alkalis, and organic solvents; withstands >1000 hours of acid/alkali immersion.
- Low Thermal Expansion: Coefficient of 5.3×10⁻⁶/°C, <0.02% deformation from -200°C to 800°C.
Polished Sapphire Tubes Features:
- Polished Sapphire Tubes Machining Precision: Surface roughness Ra <0.5 nm (double-sided polishing), concentricity error <0.02 mm, perpendicularity error <0.01 mm.
- Functional Enhancements:
- Polished Sapphire Tubes Coating Options: Anti-reflective (AR), high-reflective (HR), hydrophobic/oleophobic, and conductive (ITO/metal) coatings.
- Polished Sapphire Tubes Encapsulation: Metal flanges (316L stainless steel) and ceramic substrates (AlN) for vacuum/high-pressure interfaces.
Polished Sapphire Tubes Application
①Semiconductor Manufacturing:
- Wafer Processing: Polished sapphire tubes acts as gas delivery tubes in MOCVD equipment, ensuring high-purity gas transport in high-temperature etching environments.
- Laser Systems: UV laser output windows (266 nm transmittance 95%), tolerating kW-level energy densities.
②Medical & Biotech:
- Endoscopes: Polished sapphire tubes autoclavable at 134°C/30 min with biocompatible surfaces for minimally invasive surgery.
- Mass Spectrometry: Capillary tubes for ion extraction, enduring 350°C evaporation operations with femtogram-level detection limits.
③Industrial & Energy:
- High-Temperature Monitoring: Polished sapphire tubes are in real-time observation in molten metal furnaces and semiconductor reactors, resisting 1000°C+ temperatures and corrosive gases.
- Oil Exploration: Downhole sensor windows resistant to H₂S corrosion and 100 MPa pressure.
④Optical & Precision Instruments:
- Laser Resonators: Optical path components reducing energy loss to 0.1 dB/cm, enhancing laser efficiency.
- Infrared Imaging: Polished sapphire tubes thermal imaging windows with >90% mid-IR transmittance for clearer imagery.
⑤Aerospace & Defense:
- Satellite Optics: Polished sapphire tubes radiation-resistant windows (proton dose 1×10¹⁴ p/cm² with <2% transmittance loss).
- Missile Guidance: Infrared detection windows surviving >1000°C aerodynamic heating.
⑥Consumer Electronics:
- AR/VR: Polished sapphire tubes scratch-resistant lens coatings (0.3–1 mm thickness) for curved displays.
- Wearables: Military-grade sensor protection tubes passing MIL-STD-810G drop tests.
Recommended Sapphire Polished Tubes
2. Sapphire Tubes Customized Tubular Components 99.999% Al₂O₃ 80%-90% Transmittance For Endoscopic Catheter
Polished Sapphire Tubes Q&A
Q1: What are the key advantages of sapphire polished tubes?
A1: Sapphire polished tubes offer extreme hardness (Mohs 9), 1900°C high-temperature resistance, and excellent chemical stability, making them ideal for harsh environments like semiconductor manufacturing and aerospace.
Q2: Where are sapphire polished tubes commonly used?
A1: They are critical in semiconductor processing (etching chambers), medical endoscopes, and industrial laser systems due to their transparency and durability.
Tags: #Polished Sapphire Tube, #Single crystal Al₂O₃, #Optical Components, #Tubular Optical Component
