Silicon Carbide Powder

Silicon carbide, also referred to as carborundum/karbornm/ is an exceptionally hard and durable crystalline compound of silicon and carbon that has long been utilized as an industrial material since the late 19th century.

Though naturally-occurring moissanite can be found in meteorites and kimberlite deposits, most SiC is now produced synthetically through either dissolving carbon into molten silicon or through chemical vapor deposition processes.

High Thermal Conductivity

Silicon carbide’s superior thermal conductivity enables it to withstand high operating temperatures. This feature helps dissipate heat quickly and efficiently, protecting it from melting or fracture under demanding conditions.

Protecting equipment against wear-and-tear, it helps extend its lifespan. Thanks to its low thermal expansion coefficient and superior hardness, its low thermal expansion coefficient also makes it resistant to mechanical stresses like friction and abrasion.

Black silicon carbide powder features tightly controlled particle sizes that provide exceptional cutting rates and surface finishes, making it suitable for a range of applications such as vitrified and resinoid grinding wheels, blasting grain/powder compounds, compounds, lapping polishing non slip and wire sawing silicon and quartz.

Carborundum printmaking, a traditional collagraph printing technique wherein carborundum grit is applied to an aluminium plate and inked, then run through a rolling-bed press to produce prints on paper with organic textures that showcase its durability.

High Strength

SiC is an extremely hard material (9 on the Mohs scale). Additionally, its abrasion resistance makes it suitable for applications involving ceramic brake discs on sports cars and bulletproof vests as well as pump shaft seals. Furthermore, this material can withstand extremely high temperatures while remaining intact when in contact with other hard materials like steel.

It exhibits outstanding oxidation resistance up to about 1400degC and is insoluble in water, alcohol and acids other than hydrofluoric acid.

Green SIC can be created from pure silica sand and petroleum coke, processed using various forming methods and sintered at high temperatures in an electrical internal resistance furnace to produce both bonded and reaction bonded products. Saint-Gobain Performance Ceramics & Refractories employs this product in their production of abrasives, metallurgical, specialty refractory materials as well as metal matrix composites and kiln furniture furniture – not forgetting production of composite armor systems!

High Resistance to Chemicals

Silicon carbide has proven its durability by withstanding extreme chemical conditions and environments, such as grinding wheels in factories. Furthermore, it is used for grinding and polishing as well as industrial cutting and drilling tasks; additionally it has high wear-resistance making it suitable for use in metallurgical applications.

Since the late 19th century, silicone rubber has been utilized for applications including abrasives and grinding tools as well as refractory linings and furnace rollers. Due to its exceptional temperature resistance and thermal shock resistance properties, silicon rubber makes an excellent material choice for aerospace applications.

Silicon carbide powder can be produced by melting silica sand and coal-based coke in an electrical resistance furnace at 2500degC, then grinding or shaping into solid objects. Larger single crystals can be grown from pure silicon and carbon vapour under extreme vacuum at 3500degC – using similar processes as those for semiconductor wafers. Polymorphs, or structures with various crystal structures, exist and can be classified as alpha or beta depending on their atomic structure; alpha typically having hexagonal (Wurtzite).

High Resistance to Heat

Silicon carbide, a non-oxide ceramic material, has the ability to withstand high temperatures and abrasion. As such, it has long been utilized as a hardwearing part in grinding, honing, and sandblasting processes, while it is also often employed within aerospace and automotive industries as an abrasive to polish various materials.

Aluminium does not react with acids and temperatures of up to 1600degC. Due to its tetrahedral crystal structure, it can resist oxidation under certain circumstances – however if exposed for extended periods to high concentrations of oxygen it may oxidize quickly.

Recrystallization, hot pressing, microwave sintering, pressureless sintering and reaction sintering are among the various methods available to create ceramic in various shapes and sizes. Ceramic is used extensively as part of thermally demanding refractories and ceramics used as components in bulletproof armor applications; additionally its rigidity and strength also make it suitable for astronomical telescope mirrors.