Shaanxi KeGu New Material Technology Co., Ltd
| Payment Terms | L/C,D/A,D/P,T/T, |
| Model Number | Customizable |
| Place of Origin | China |
| Brand Name | KeGu |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T, | Model Number | Customizable |
| Place of Origin | China | Brand Name | KeGu |
| High Light | Reaction Bonded Silicon Carbide thermocouple tube ，RBSC thermocouple protection tube ，SiSiC thermocouple tube with warranty | ||
Reaction Bonded Silicon Carbide (RBSC), also known as Silicon Infiltrated Silicon Carbide (SiSiC), is a dense ceramic material featuring excellent gas tightness, high mechanical strength, and outstanding thermal conductivity.
RBSC thermocouple protection tubes are specifically designed for temperature measurement applications where reliable sealing performance is required, including atmosphere furnaces, heat treatment systems, and flue gas monitoring equipment.
Compared with porous silicon carbide materials, RBSC provides a nearly non-porous structure, making it highly suitable for applications requiring protection against gas penetration and chemical atmosphere exposure.
With a continuous service temperature of up to 1350°C, RBSC offers an excellent balance between performance, durability, and cost-effectiveness for medium-temperature industrial furnace applications.
RBSC thermocouple protection tubes are manufactured through a reaction bonding process.
High-purity silicon carbide powder is mixed with carbon materials, formed into the required tube shape, and then subjected to controlled drying and debinding.
During high-temperature silicon infiltration, molten silicon penetrates into the porous structure and reacts with carbon to form secondary silicon carbide. The remaining silicon fills the residual pores, creating a fully dense composite structure.
This process provides:
The presence of residual free silicon provides excellent densification and processing advantages while defining the maximum recommended operating temperature range.
The dense microstructure prevents gas penetration, making RBSC tubes suitable for:
RBSC provides excellent resistance against:
High thermal conductivity enables:
The reaction bonding process results in:
Compared with advanced sintered SiC materials, RBSC provides an economical solution for many medium-temperature applications.
| Property | Value |
|---|---|
| Material | Reaction Bonded Silicon Carbide (RBSC / SiSiC) |
| SiC Content | Approximately 81% |
| Maximum Service Temperature | 1350°C (SK grade) / 1380°C (high-silicon SKD grade) |
| Bulk Density | 3.00–3.05 g/cm³ |
| Apparent Porosity | 0% (Gas-tight structure) |
| Flexural Strength (Room Temperature) | 260–300 MPa |
| Flexural Strength (1400°C) | 180–200 MPa |
| Elastic Modulus | 300–340 GPa |
| Thermal Conductivity (1000°C) | 35–36 W/m·K |
| Thermal Expansion Coefficient | 4.4–4.5 ×10⁻⁶/°C |
| Thermal Shock Resistance | Excellent |
| Standard Outer Diameter | Φ12–40 mm |
| Standard Inner Diameter | Φ4–20 mm |
| Standard Length | Up to 1200 mm |
| Gas Tightness | Fully dense / suitable for gas sampling |
| Custom Dimensions | Available upon request |
RBSC thermocouple protection tubes are widely used in industrial environments requiring reliable temperature measurement and excellent sealing performance.
Typical applications include:
Suitable for:
Used in:
Including:
Applications include:
RBSC is an excellent choice when the application requires:
✔ Excellent gas tightness
✔ High mechanical strength
✔ Fast thermal response
✔ Stable dimensional performance
However, for continuous operation above 1400°C or highly oxidizing high-temperature environments, alternative materials such as:
may provide better long-term performance.
| Material | Max Service Temperature | Gas Tightness | Main Advantage |
|---|---|---|---|
| RBSC / SiSiC | 1350°C | Excellent | Gas sealing and mechanical strength |
| Si₃N₄-Bonded SiC | 1450°C | Medium | Thermal shock resistance |
| R-SiC | 1650°C | Moderate | Oxidation and sulfur resistance |
| SSiC | 1650°C | Excellent | Corrosion resistance and high performance |
Kegu provides customized Reaction Bonded Silicon Carbide (RBSC / SiSiC) Thermocouple Protection Tubes for industrial furnaces, gas analysis systems, and high-temperature measurement applications.
Contact our engineering team for technical consultation and customized solutions.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2017
Ecer Certification：
Verified Supplier
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