SiC ceramics are very hard and strong non-oxide materials that possess unique thermal, mechanical and electronic properties. They are very hard, second only to diamonds, with excellent wear and abrasion resistance. They can maintain high mechanical strength at high temperature. The most impressive is their high thermal shock resistance. They can be quenched in water from 1200°C without cracking. The ceramics also have high chemical corrosion resistance. Silicon Carbide (SiC) ceramics have wide applications in the fields of ceramics, glass ceramics, industrial kilns, automobiles, metallurgy, petroleum, chemical, steel, machinery, electric power, aerospace, etc.
Unique key characteristics of SiC
High mechanical strength at both room and high temperatures
Ultrahigh thermal shock resistance
Much higher thermal conductivity than other ceramics and glasses
High chemical durability
Skyline components can provide SiC products based on the requirements of customers. The materials include Oxide bonded, Nitride bonded, Recrystalized, Reaction bonded, and Sintered SiCs.
Our SiC products include: roller, square cross beam, burner nozzle sets, combustion chamber, heat radiation ceramic inner tube, cooling air pipe, desulphurization nozzle, sealing parts, and impeller.
Oxide Bonded SiC (OBSiC) OBSiC has a maximum service temperature of 1500°C. It has good thermal shock, corrosion resistance and excellent thermal conductivity. It can be used in oxygen atmosphere furnaces and molten non-ferrous metals such as Aluminum. It is resistant to oxidation and slag attack. OBSiC doesn’t conduct electricity. It is about 15% porous and not gas tight.
Nitride Bonded SiC (NBSiC) NBSiC has the similar characteristics as OBSiC. But it is denser, less porous (10%), and has slightly better thermal shock, corrosion resistance, and twice the crushing strength of OBSiC. It has a maximum service temperature of 1450°C.
Recrystallized SiC (ReSiC) ReSiC is pure silicon carbide material. It has a porosity of about 17%, so is lightweight and can be fabricate to very complex shapes. It can operate in temperature of 1650°C (oxidizing) and approximately 2000°C (under protective atmosphere).
Reaction Bonded SiC (RBSiC or SiSiC) RBSiC or SiSiC has high strength, high thermal conductivity, and low porosity (<0.1%). It is gas tight, and can conduct electricity. It is highly resistant to oxidation, impacting of rapid cooling or heating, and shaking. No oxidation and bending deformation occur at high temperature for long-term use.
Sintered Alpha SiC (SSiC) SSiC has a maximum service temperature of 1700°C in both oxidizing and corrosive atmospheres. It can be used in chemicals including strong acids and bases. It is chemically inert. It has five times the thermal conductivity, and ten times thermal shock resistance of Alumina ceramics.