RSiC ReSiC Silicon carbide (Sic) plates, beams, rollers, saggars, burner tubes etc.

Recrystallized silicon carbide (RSiC) is a porous ceramic material formed from high-purity silicon carbide through evaporation-condensation recrystallization at 2400℃ under certain pressure and an inert atmosphere. Its particles form a symbiotic bridged structure, exhibiting virtually no shrinkage during sintering, and a porosity of 10%-20%.

It possesses high high-temperature strength, strong oxidation resistance, good corrosion resistance, and a hardness second only to diamond. It is suitable for high-temperature industrial components such as kiln furniture, combustion nozzles, heat exchangers, diesel particulate filters, solar collectors, and aerospace structural parts. The maximum operating temperature can reach 1700℃.

RSiC Technical Data Sheet

Note:The above data are typical values for the test samples and do not represent the precise specifications promised by our company for all products.

1. Recrystallized silicon carbide ceramics have wide applications in high-temperature industries, primarily used as high-temperature kiln furniture, burner nozzles, ceramic radiant heating tubes, component protection tubes, heat exchangers, and combustion nozzles. They offer advantages such as energy saving, increased effective kiln volume, shortened firing cycles, improved kiln production efficiency, and high economic benefits.

2. In the environmental and energy sectors, recrystallized silicon carbide is used as a diesel particulate filter (DPF) and fossil fuel air filter. Due to its high thermal conductivity and light absorption, it is made into honeycomb ceramics for use as absorbers (solar collectors) in solar thermal power generation towers.

3. In the aerospace and defense sectors, recrystallized silicon carbide is used to manufacture structural components such as engines, tail fins, and fuselages for aerospace vehicles; it is also used in the manufacture of military equipment such as bulletproof ceramics.

4. In the semiconductor and photovoltaic sectors, recrystallized silicon carbide ceramics are used in components of high-temperature sintering furnaces for photovoltaic crystalline silicon and as silicon carbide polishing rings for semiconductor silicon wafers.

5. In the metallurgical and chemical industries, recrystallized silicon carbide bricks are used as blast furnace linings, linings for molten iron pretreatment cars, linings for dry quenching towers, and linings for zinc smelting distillation tanks.

6. In other fields, recrystallized silicon carbide can be used as a high-temperature igniter; its porous structure provides conditions for composite with other materials (such as Al and Cu), and it can be used to prepare electronic packaging materials; it is also used in automotive parts, drone propeller bushings, etc.

1. Recrystallized silicon carbide (R-SiC) is a high-performance material formed at temperatures above 2000℃, second only to diamond in hardness. It retains many of the excellent properties of SiC, such as high high-temperature strength, strong corrosion resistance, excellent oxidation resistance, and good thermal shock resistance.

2. Superior mechanical properties. Recrystallized silicon carbide has higher strength and stiffness than carbon fiber, high impact resistance, and can perform well in extreme temperature environments, exhibiting excellent resistance under various conditions. Furthermore, it possesses good flexibility, is not easily damaged by stretching and bending, greatly improving its application performance.

3. High corrosion resistance. Recrystallized silicon carbide exhibits high corrosion resistance to various media, preventing erosion by multiple corrosive media, maintaining its mechanical properties over a long period, and possessing strong adhesion, resulting in a longer service life. In addition, it also has good thermal stability, adapting to a certain range of temperature changes, improving its application effectiveness.

4. No shrinkage during sintering. Because the sintering process does not shrink, residual stress is not generated that could lead to product deformation or cracking, allowing for the fabrication of complex-shaped, high-precision components.

5. High porosity after firing. Recrystallized SiC products after firing contain approximately 10%–20% residual pores. The porosity of the material depends more on the porosity of the green body itself and does not change significantly with sintering temperature, providing a basis for porosity control. It has wide applications in porous materials, such as in exhaust gas filtration and fossil fuel air filtration, where it can replace traditional porous products.

6. RSiC has very clear and clean grain boundaries, free of glassy phases and impurities, because any oxides or metallic impurities have already volatilized at high temperatures of 2150–2300℃. The evaporation-condensation sintering mechanism can also purify SiC (the SiC content in RSiC is above 99%).