RSiC Sagger Acid And Alkali Resistant Alumina Coating
The recrystallized silicon carbide sagger has unique advantages in the firing of special ceramics, especially suitable for high-purity, ultra-high temperature, and highly corrosive ceramic sintering environments.
Coating the surface of silicon carbide sagger with aluminum oxide (Al₂O3) powder is a common protective measure in high-temperature processes. The main functions of silicon carbide sagger include anti adhesion, anti-oxidation, prolonging the lifespan of the sagger, and optimizing the process effect
RSiC sagger is particularly suitable for firing high-performance ceramics such as:
Aluminum nitride (AIN)
Zirconium boride (ZrB2)
Zirconia (ZrO2)
Silicon carbide ceramics
PRODUCT DESCRIPTION
The core advantages of RSiC sagger
(1) Ultra high temperature stability
Temperature endurance limit: Long term endurance of 1650 ° C, far exceeding the aluminum oxide sagger (1600 ° C) and graphite sagger.
Case: When firing ZrB. - SiC ultra-high temperature ceramics, the lifespan of the RSiC sagger is more than three times that of graphite.
(2) Chemical inertness
Corrosion resistance: Resistant to the erosion of molten borides and hydrides (such as AI vapor in AIN sintering), its stability in HF/HCI atmosphere is better than that of alumina sagger.
Case: When firing fluoride transparent ceramics (such as CaF), there is no risk of oxidation reaction in the RSiC sagger.
(3) Uniformity of thermal field
Porous structure (15-20% porosity): promotes uniform infiltration of atmosphere and avoids density differences in the same part of ceramics;
Pores can serve as a thermal buffer layer, reducing thermal stress (crucial for large ceramic components)
(4) Low pollution
Purity>99.999%: Avoid impurities such as Fe and AI from migrating into the ceramic, which may affect the dielectric/mechanical properties.
FEATURES & BENEFITS
RSiC sagger High temperature resistance
RSiC sagger Thermal shock resistance
RSiC sagger High thermal conductivity
RSiC sagger High mechanical strength
RSiC sagger Acid and alkali resistance
RSiC sagger Wear resistance
MAIN PARAMETER
High Temperature Kiln Equipment Industry | RSiC |
SiC Content (%) | ≥99% |
Bulk Density (g/cm3) | 2.65~2.75 |
Apparent Porosity (%) | <17 |
Room temperaturestrength (MPa) | 90~100 |
Strengthat 1300℃(MPa) | 100-110 |
Elasticity modulus at 20℃ | 240 |
Thermal Conductivity At 1200℃(W/mk) | 36 |
Thermal Expansion x10-6/℃ | 4.6 |
Max Using Temperature（℃） | 1650℃ |
Hardness At 20°C (Kg/mm2) | 2000 |
PRODUCT DETAIL
RSiC sagger alumina coating:The picture shows the surface of a silicon carbide sagger coated with aluminum oxide (Al2O3) powder, which can prevent adhesion, resist oxidation, and extend the lifespan of the sagger.
PACKING
We provide OEM and ODM services, quality control throughout the entire process, real-time order progress feedback, professional technical consultation, and quick response to after-sales issues. We also offer customized international logistics solutions to empower customers with technological upgrades and supply chain optimization, ensuring worry free global customers from procurement to application.
