Quartz Diffusion Furnace Tube for Semiconductor Thermal Processing

High Purity Quartz Diffusion Furnace Tube is a precision-fabricated fused quartz component designed for semiconductor diffusion furnaces, oxidation furnaces, annealing systems, and high-temperature wafer thermal processing equipment. It is commonly used as a clean process chamber or reaction tube during dopant diffusion, thermal oxidation, annealing, and other semiconductor manufacturing processes.

Made from high-purity fused quartz, the diffusion furnace tube provides excellent thermal stability, low thermal expansion, strong chemical resistance, and low contamination performance. Its smooth surface, dimensional accuracy, and high-temperature resistance make it suitable for demanding semiconductor and photovoltaic production environments.

Quartz diffusion furnace tubes can be customized according to furnace model, wafer size, process temperature, gas atmosphere, and equipment structure. Different designs such as straight tubes, flanged tubes, open-end tubes, closed-end tubes, and special quartz process tubes are available for OEM and replacement applications.

Caractéristiques principales

• High-purity fused quartz material for clean thermal processing environments
• Excellent resistance to high temperature and thermal shock
• Low thermal expansion for improved dimensional stability during heating and cooling cycles
• Good chemical resistance in oxidizing, inert, and many acidic process environments
• Smooth inner surface to help reduce particle adhesion and process contamination
• High transparency and stable quartz structure for visual inspection and process reliability
• Customizable outer diameter, inner diameter, length, wall thickness, and end structure
• Available with flange, ground joint, sealed end, open end, side port, or special quartz welding design
• Suitable for semiconductor wafer diffusion, oxidation, annealing, and photovoltaic cell manufacturing

Specification Table

Objet	Description
Nom du produit	High Purity Quartz Diffusion Furnace Tube
Matériau	Fused Quartz / High Purity Quartz
Tube Type	Straight tube, flanged tube, open-end tube, closed-end tube, customized diffusion tube
Purity Grade	High-purity grade, semiconductor-grade available
Diamètre extérieur	Customized according to equipment requirements
Diamètre intérieur	Customized according to equipment requirements
Longueur	Sur mesure
Épaisseur de la paroi	Sur mesure
Finition de la surface	Fire-polished, mechanically polished, cleaned surface
End Structure	Both-end open, one-end closed, flange end, ground end, special welded structure
Processing Options	Cutting, grinding, polishing, drilling, slotting, sealing, flange welding, quartz welding
Application Environment	High-temperature furnace, oxidation atmosphere, inert gas, controlled process atmosphere
Cleaning Requirement	Standard cleaning or high-cleanliness cleaning available
Emballage	Clean protective packaging, customized export packaging available
Customization	OEM drawings, samples, and furnace model specifications accepted

Applications typiques

Quartz diffusion furnace tubes are widely used in semiconductor, photovoltaic, research, and high-temperature industrial processing fields.

Fabrication de semi-conducteurs

Quartz diffusion furnace tubes are used as process chambers in semiconductor diffusion furnaces. They provide a stable and clean environment for wafer heat treatment, dopant diffusion, oxidation, annealing, and other thermal processes.

Thermal Oxidation Process

During oxidation processing, quartz tubes help maintain a clean and controlled furnace environment. Their high thermal stability and chemical resistance make them suitable for oxygen, steam, and other oxidation-related process atmospheres.

Wafer Annealing

Quartz diffusion tubes are also used in annealing processes for silicon wafers, compound semiconductor wafers, and other advanced materials. The low contamination characteristics of quartz help improve process consistency.

Photovoltaic Cell Production

In solar cell manufacturing, quartz furnace tubes are used in diffusion and thermal processing equipment. They help support stable high-temperature processing for photovoltaic wafer production.

Laboratory and Research Furnaces

For universities, laboratories, and R&D centers, quartz diffusion furnace tubes are suitable for material testing, high-temperature experiments, controlled atmosphere processing, and small-batch wafer research.

Why Use Quartz for Diffusion Furnace Tubes?

Quartz is one of the most widely used materials in semiconductor thermal processing because it combines high temperature resistance, chemical stability, and low contamination performance. Compared with ordinary glass materials, fused quartz offers better thermal shock resistance and better dimensional stability under repeated heating and cooling cycles.

In semiconductor diffusion and oxidation processes, the furnace tube directly contacts the process atmosphere. Therefore, material purity, surface cleanliness, dimensional accuracy, and thermal reliability are critical. A well-manufactured quartz diffusion furnace tube can help improve process stability, reduce particle contamination, and extend the service life of furnace components.

Custom Manufacturing Capability

We provide customized quartz diffusion furnace tubes based on customer drawings, samples, equipment models, or detailed technical requirements.

Les options de personnalisation comprennent :

• Diamètre extérieur et diamètre intérieur
• Tube length and wall thickness
• Large-diameter quartz tube processing
• Open-end or closed-end structure
• Quartz flange design
• Ground joint or sealing surface
• Side holes, gas inlet ports, exhaust ports, and special openings
• Quartz welding and assembly
• Fire polishing and mechanical polishing
• High-cleanliness cleaning and packaging

Whether the application is for a standard diffusion furnace replacement tube or a customized semiconductor process tube, we can support flexible manufacturing according to specific furnace design and process requirements.

Quality Control

Each quartz diffusion furnace tube can be inspected according to customer requirements before shipment. Common inspection items include dimensional accuracy, surface condition, edge quality, welding position, visual defects, and packaging condition.

For high-cleanliness applications, additional cleaning, handling, and packaging requirements can be arranged to reduce contamination risk during transportation and installation.

Ordering Information

To provide an accurate quotation, please share the following information:

• Tube outer diameter
• Tube inner diameter
• Tube length
• Wall thickness
• End structure or flange design
• Quantity
• Application temperature
• Process atmosphere
• Furnace model or equipment drawing
• Special cleaning or packaging requirements

If drawings are available, please provide technical drawings for faster evaluation and quotation.

FAQ

1. Can the quartz diffusion furnace tube be customized?

Yes. The outer diameter, inner diameter, length, wall thickness, flange structure, end design, side holes, and special quartz welding structures can be customized according to customer requirements.

2. What is the difference between a quartz furnace tube and a quartz diffusion furnace tube?

A quartz furnace tube is a general high-temperature quartz tube used in different furnace systems. A quartz diffusion furnace tube is more specifically used in semiconductor or photovoltaic diffusion furnaces, where cleanliness, dimensional accuracy, thermal stability, and low contamination are especially important.

3. What applications are suitable for quartz diffusion furnace tubes?

They are suitable for semiconductor wafer diffusion, thermal oxidation, annealing, photovoltaic cell production, laboratory furnace systems, and other controlled high-temperature processes.

4. Can you manufacture replacement tubes according to furnace model or sample?

Yes. We can produce replacement quartz diffusion tubes based on drawings, samples, furnace model information, or detailed dimensional specifications.

5. What information is needed before ordering?

Please provide the tube dimensions, wall thickness, structure type, quantity, working temperature, process atmosphere, and drawings if available. This helps ensure accurate manufacturing and quotation.