Reaction-sintered silicon carbide (RS-SiC) is a ceramic material which excels in high temperature environments and can be found across a range of industries, providing exceptional heat protection.
As it’s hard, strong and resistant to corrosion and thermal shock, ceramic seal material is ideal for chemical pumps, burner components and kilns.
RS-SiC also exhibits low linear and torsional expansion.
High Temperature Resistance
Sintered silicon carbide (SSiC) is an adaptable ceramic material with numerous industrial and high-tech uses, from industrial machinery to high-performance electronics. Due to its ability to withstand extreme conditions, SSiC serves as an integral element in engineering solutions that address today’s and tomorrow’s challenges.
Denser than reaction bonded silicon carbide (RBSiC), Tungsten Carbide boasts superior strength and hardness. Due to its unique crystalline structure and strong covalent bonding properties, Tungsten Carbide offers greater resistance against fracture and shock than RBSiC.
SSiC boasts excellent resistance to abrasion and wear as well as corrosion. Thanks to its ability to withstand strong acids, alkalis, and various other corrosive media sources, SSiC makes an excellent material choice for chemical pump parts, heat exchangers, reactor linings and kiln components.
Corrosion Resistance
Sintered silicon carbide offers excellent corrosion and oxidation resistance at high temperatures, including hydrochloric, sulfuric and nitric acids; bases (including amines, potash and caustic soda); organic solvents as well as other corrosive media.
Morgan’s PGS-100 premium mechanical grades offer outstanding lubricity to reduce friction and wear, making them suitable as counterface material for hardface pair sealing applications that increase run times or prolong face life.
Pressureless sintered SiC ceramics are produced by mixing SiC powder with oxide ceramics based on aluminium oxide to form a liquid phase during sintering, creating a dense material with superior mechanical properties, such as high strength and fracture toughness. This allows it to be used under harsh working conditions such as high-speed friction and pressure environments while maintaining exceptional hardness while providing better thermal shock resistance than reaction bonded SiC ceramics.
Haute résistance
Silicon carbide is one of the toughest materials known, boasting high levels of hardness that enable it to withstand abrasion, chemicals, high temperatures and even impact, making it one of the most versatile ceramics on the market.
Sintering strengthens the inner bonds of this material, making it twice as strong as other versions of silicon carbide and most ceramics. This makes sintering ideal for bushings subjected to abrasion, chemicals or high heat; thicker rods may even be replaced to decrease weight, heat loss and energy needs in systems.
Reaction sintering is a popular method for producing large size and complex shape silicon carbide ceramics, but has numerous limitations such as low density and coarse grain. Our high strength RS-SiC material can be made with controlled residual silicon size for increased bending strength of over 1000 MPa; making it suitable for more demanding applications like mechanical seals and kiln components at reduced costs than direct sintered SiC.
Thermal Shock Resistance
Sintered silicon carbide’s combination of excellent physical properties enables it to better withstand thermal shock, which is a condition which can lead to structural failure. Its high thermal conductivity helps minimize local stresses during temperature change while its low expansion coefficient minimizes dimensional changes which might otherwise cause cracking and breakage of its structures.
SSiC’s chemical inertness makes it suitable for use in various harsh environments, including strong acids and oxidizing agents. Furthermore, its ability to withstand extreme temperatures results in unparalleled wear resistance for industrial seals, bearings, aerospace applications and aerospace seals and bearings.
As opposed to reaction bonded and green SiC materials, which tend to have low density and friability, pressureless sintering produces dense materials with superior mechanical strength and toughness that make this an ideal choice for advanced engineering projects. Its quality makes this method suitable for complex engineering solutions.
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