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CVD sic coated furnace tubes
Semixlab CVD SiC Coated Furnace Tubes are engineered for advanced semiconductor thermal processing systems where material purity, thermal stability, and chemical resistance are critical to process performance and device yield. These furnace tubes are constructed using high-purity isostatic graphite substrates, and are enhanced with a dense chemical vapor deposited (CVD) silicon carbide coating. In advanced thermal processing systems, including diffusion, oxidation, epitaxy, and SiC/GaN crystal growth equipment, Semixlab furnace tubes function as critical components for maintaining process uniformity and contamination control. We welcome your inquiry.
Description
At Semixlab, we specialize in supplying high-performance CVD SiC Coated Furnace Tubes engineered for demanding semiconductor manufacturing environments. Combining a high-strength substrate with an ultra-pure Chemical Vapor Deposited (CVD) Silicon Carbide coating, our furnace tubes deliver exceptional thermal stability, corrosion resistance, contamination control, and long service life.
Designed for advanced thermal processing applications, Semixlab CVD SiC coated furnace tubes are widely used in diffusion furnaces, oxidation systems, epitaxy reactors, SiC crystal growth equipment, and high-temperature vacuum processing systems.
What Are CVD SiC Coated Furnace Tubes?
A CVD SiC coated furnace tube is a composite structure consisting of a carefully selected substrate material(High-Purity Isostatic Graphite) coated with a dense layer of high-purity Silicon Carbide (SiC) through Chemical Vapor Deposition technology.
Among these material systems, high-purity isostatic graphite combined with CVD SiC coating is widely recognized as one of the most effective solutions for semiconductor thermal processing equipment.Physical Characteristics of CVD SiC Coated Furnace Tubes
High-Purity CVD Silicon Carbide Surface
The CVD SiC layer provides:
● Ultra-high purity with extremely low metallic contamination
● Dense, non-porous microstructure
● Excellent oxidation resistance
● Superior resistance to corrosive process gases
● Low particle generation performance
● High-Purity Isostatic Graphite Substrate
The Isostatic Graphite substrate contributes:
● Excellent thermal conductivity
● Uniform heat distribution
● High thermal shock resistance
● Low thermal expansion stress
● Lightweight yet mechanically robust structure
This combination enables furnace tubes to operate reliably in high-temperature environments exceeding 1400°C while maintaining dimensional stability and process cleanliness.
Why Choose Semixlab?
Semixlab is focused on supplying advanced materials and precision components for semiconductor manufacturing equipment.
Our strengths include:
● Expertise in semiconductor thermal process materials
● High-purity graphite and SiC component manufacturing
● Advanced CVD coating technology
● Custom engineering solutions
● Stable quality and reliable supply chain
● Support for SiC, GaN, silicon, and compound semiconductor applications
By combining material science expertise with semiconductor industry experience, Semixlab helps customers improve process stability, reduce contamination risks, and extend equipment service life.
Whether you are developing diffusion furnaces, epitaxy reactors, SiC crystal growth systems, or advanced thermal processing equipment, Semixlab delivers customized CVD SiC coated furnace tube solutions designed to meet the stringent requirements of modern semiconductor manufacturing.
Contact Semixlab today to discuss your application requirements and discover how our semiconductor-grade CVD SiC coated furnace tubes can enhance your process performance and operational reliability.
Specifications
| Basic physical properties of CVD SiC coating | |
| Property | Typical Value |
| Crystal Structure | FCC β phase polycrystalline, mainly (111) oriented |
| Density | 3.21 g/cm³ |
| Hardness | 2500 Vickers hardness(500g load) |
| Grain Size | 2~10μm |
| Chemical Purity | 99.99995% |
| Heat Capacity | 640 J·kg-1·K-1 |
| Sublimation Temperature | 2700℃ |
| Flexural Strength | 415 MPa RT 4-point |
| Young' s Modulus | 430 Gpa 4pt bend, 1300℃ |
| Thermal Conductivity | 300W·m-1·K-1 |
| Thermal Expansion(CTE) | 4.5×10-6K-1 |
Applications
Applications in Semiconductor Manufacturing
The combination of a high-purity substrate and a dense CVD silicon carbide coating enables these furnace tubes to perform reliably across a wide range of semiconductor manufacturing processes. In diffusion and thermal oxidation systems, the SiC-coated surface provides excellent resistance to high-temperature oxidizing atmospheres while minimizing particle generation and metallic contamination. The low porosity and chemical inertness of the CVD SiC layer help maintain process consistency during extended production cycles.
In epitaxial growth applications, including silicon, silicon carbide (SiC), and compound semiconductor manufacturing, furnace tube cleanliness and thermal stability are essential for achieving uniform film deposition and repeatable process results. The dense SiC coating acts as a protective barrier against corrosive process gases while preserving the thermal characteristics required for precise temperature control throughout the reactor chamber.
For advanced power semiconductor production, particularly in SiC and GaN device manufacturing, CVD SiC coated furnace tubes contribute to improved thermal field stability, reduced contamination risks, and enhanced equipment reliability. Their ability to withstand repeated thermal cycling under high-temperature and vacuum conditions makes them a preferred material solution for crystal growth systems, annealing equipment, and other critical thermal processing tools.
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