Quartz Feeder Tube
Our Quartz Feeder Tube System is engineered for precise, contamination-free material delivery in high-temperature and corrosive environments. Manufactured from 99.99% fused silica, it ensures optimal performance in semiconductor processing, chemical vapor deposition (CVD), and specialty glass manufacturing.
Description
Key Features
Material Excellence
- Ultra-High Purity: 99.99% SiO₂ composition minimizes metallic contamination
- Thermal Stability: Withstands continuous operation at 1100°C (short-term to 1450°C)
- Chemical Resistance: Inert to most acids, halogens, and molten salts (except HF)
Precision Engineering
- Custom Diameters: Available from 3mm to 150mm ID
- Wall Thickness Options: 1mm to 10mm (standard)
- Surface Finish:
- Fire-polished interior (Ra <0.5μm)
- Optional precision grinding for OD tolerances (±0.05mm)
Configuration Options
- Straight, bent (30°-180°), or helical designs
- Flanged, threaded, or ground-glass connections
- Integrated thermocouple wells or gas purge ports
Application Fields
● Semiconductor Industry
- Silicon ingot production
- MOCVD reactor feed systems
- Diffusion furnace applications
● Advanced Materials
- Optical fiber manufacturing
- PV polysilicon processing
- High-purity ceramic synthesis
● Research & Development
- Novel material synthesis
- Space simulation chambers
- Nuclear research applications
Properties
|
Physical Properties |
Values |
|
Purity |
＞99.99% |
|
Density |
2.2g/cm3 |
|
Transparency |
＞90% |
|
Mohs Hardness |
5.5--6.5 |
|
Deformation Point |
1280℃ |
|
Softening Point |
1780℃ |
|
Annealing Point |
1250℃ |
|
Specific Heat (20 - 350°C) |
670J/kg.℃ |
|
Thermal Conductivity (20°C) |
1.4W/m.℃ |
|
Heat Conductivity (w/m.k,1000 ℃ ) |
1.0-1.2 |
|
Refractive Index |
1.4585 |
|
Coefficient of Thermal Expansion |
5.5*10 -7cm/cm.℃ |
|
Hot - working Temperature |
1750--2050℃ |
|
Short - term Service Temperature |
1300℃ |
|
Long - term Service Temperature |
1100℃ |
|
Chemical Properties |
Values |
|
Acid resistant |
Strong Acid(except HF),Strong alkali, organic solution |
|
High temperatures Corrosion resistant |
Excellent |
|
Metal Impurity Content |
＜5 ppm |
|
Electrical Properties |
Values |
|
Resistivity |
7*107Ω.cm |
|
Insulation Strength |
250~400Kv/cm |
|
Dielectric Constant |
3.7~3.9 |
|
Dielectric Absorption Coefficient |
＜4*10-4 |
|
Dielectric Loss Coefficient |
＜1*10-4 |
|
Mechanical Properties |
Values |
|
Compressive Strength |
1100MPa |
|
Bending Strength |
67MPa |
|
Tensile Strength |
48MPa |
|
Poisson's Ratio |
0.14~0.17 |
|
Young's Modulus |
72000MPa |
|
Shear Modulus |
31000MPa |
Shipping
FAQ
Q1: What's the lead time for custom designs?
A: it depends on order quantity.
Q2: How do you prevent material buildup in the Quartz Feeder Tube?
A: We recommend:
1) Periodic thermal cycling (800°C for 2h)
2) Gas purging during operation
3) Optional inner surface etching treatment
Q3: What maintenance is required?
A: Annual inspection recommended for:
- Wall thickness measurement (ultrasonic)
- Visual defect check
- Transmission verification (for optical applications)
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