Silicon Carbide Powder and Its Many Applications

Silicon Carbide powder is an non-oxide ceramic material with excellent mechanical and strength properties, low thermal expansion rates, and acid corrosion resistance.

Aluminum Oxide (Al2O3) is an exceptional abrasive for lapping and polishing harder materials, including petrographic samples, semiconductor wafers, soft metal alloys and their alloys, softwood pulp products and soft metal alloys and alloys. Furthermore, Al2O3 is much harder than Aluminum Oxide.


Silicon Carbide Powder hardness is one of its primary attractions to industry, being one of the hardest manmade materials (Mohs hardness 9.1 / 2550 knoop). Unlike metals, however, it does not oxidize, melt or disintegrate at elevated temperatures; its strength and modulus of elasticity properties make it suitable for many abrasive applications as well as being essential in creating refractories and electrical components.

Silicon Carbide production begins by calcining raw material to form carbide grains that are then crushed and size graded, before being crushed and used as raw material in ceramic production, furnace linings, refractory bricks or used as loose grains to manufacture abrasives or mixed with biners to shape into products such as loose grains abrasives or mixed with biners to shape into finished abrasive products. Silicon Carbide also boasts desirable low coefficient of expansion rates, high thermal conductivity levels and chemical inertness making it an excellent material choice when producing ceramics furnace walls, checker bricks muffles kiln furniture support shelves as well as recrystallized silicon carbide heating elements from recrystallized silicon carbide material.

Washington Mills offers a range of black and green Silicon Carbide powders and grits suitable for various industries. Our Black Silicon Carbide powders are carefully processed into precise abrasive grit sizes for precision lapping and polishing applications; wire sawing quartz blocks; manufacturing of bonded and coated abrasives products and high pressure blasting or vacuum sandblasting processes. It also makes an excellent high pressure blasting and vacuum sandblasting surface finisher!

CARBOREX(r) Silicon Carbide Grains and powders can be tailored to meet the chemistry and shape specifications that meet your exact application and industry needs. We offer an assortment of abrasive grit sizes in black, brown and green for you to select from, providing for customized performance in all industries and applications.

Washington Mills’ Black and Brown Silicon Carbide Powder is manufactured using an industry-exclusive process that ensures it delivers only the highest-grade product available anywhere. This involves crushing, sizing and re-crushing particles under precise control to achieve the highest purity and particle distribution for your application – ideal for grinding wheels, friction/blast media applications, compounds non-slip coatings and lapping applications. Our CARBOREX(r) Silicone Carbide is widely utilized by major corporations and research institutes in aerospace, energy, microelectronic industries alike!

High Thermal Conductivity

Silicon Carbide (SiC) is an extremely hard and thermally conductive ceramic material. It finds wide use in industrial settings that demand resistance to high temperatures, shockwaves and mechanical stress as well as electrical devices like heating elements and semiconductors. SiC’s strong tetrahedral bonding between silicon atoms and carbon atoms enables an extremely high rate of conduction due to the strong electrical connection between its crystal structures and silicon-carbon bonds.

Green and black SiC are high thermal conductivity materials with thermal conductivity ratings up to 100 W/m-K, which make them very durable. Black SiC is typically preferred over green because it is easier and cheaper to produce; its purity can range between 97-99{3acecd06353d99efc7e310a3f1da5a7d22fc0f88af6041abe641b496d156e631} depending on grit size used. Both forms are produced by reacting silica sand with coke before crushing and size-grading for use as a refractory bonding material; coarser grits may also be bonded together using various methods such as self/reaction bonding or silicon nitride oxide/aluminosilicate glass; finer grits generally sintered alone or with help from 0.5{3acecd06353d99efc7e310a3f1da5a7d22fc0f88af6041abe641b496d156e631} carbon/boron aids.

Silicon carbide ceramic is widely utilized due to its exceptional hardness, thermal conductivity, wear resistance and other desirable characteristics. Silicon carbide finds use in products ranging from abrasives for its toughness, wear resistance and low thermal expansion; to refractories and ceramic structures that must withstand heat shock resistance; as refractories/ceramic structures/structures for resistant structures against high temperature shock; as refractories/ceramic structures for resistance against high temperature shock resistance and electronics where its unique qualities make silicon carbide ideal for use across devices that utilize its unique properties – the possibilities are many!

Carborundum is commonly mistaken as being synonymous with naturally-occurring moissanite gemstone, however it actually refers to an extremely hard synthetic chemical compound of silicon and carbon produced commercially since 1893 as an abrasive. Furthermore, this material can also be shaped to produce structural ceramics like kiln shelves and checker bricks as well as bulletproof vest plates.

Corrosion Resistant

Silicon Carbide Powder displays extraordinary corrosion resistance even in acidic environments, thanks to the unique tetrahedral coordination between 4 silicon and 2 carbon atoms in its crystal structure. This arrangement also allows for tight packing of molecules within it – further increasing strength of material. Silicon carbide boasts exceptional resistance against most inorganic acids (except hydrochloric and sulfuric acids ), salts, alkalis, and many oxidizing agents; though insoluble in water it does dissolve readily with alcohol as well as organic compounds.

SiC is an excellent corrosion resistant material, making it suitable for environments such as chemical processing and mining operations. Furthermore, due to its low neutron cross section it may also be suitable for nuclear reactor applications.

Manufacturing pressureless sintered and reaction bonded silicon carbide to specific size, chemical and shape requirements is possible; the properties of each form vary significantly; pressureless sintered is typically more resistant to corrosion due to its alpha polymorph forming at temperatures under 1800degC with hexagonal crystal structures similar to Wurtzite; while beta modifications featuring zinc blende crystal structures form at higher temperatures.

Both types of silicon carbide vary significantly based on impurities, sintering aids and grain boundary phases present in their final products, which can drastically change their corrosion behavior.

Washington Mills provides black silicon carbide grains and powders in various sizes, chemistries, shapes and applications to meet a range of industries’ needs. Applications of our CARBOREX(r) silicon carbide include blasting media blasting wheels cutting wheels non-slip coated abrasives ceramics metallurgical products refractories wiresawing quartz silicon nonferrous metals wiresawing quartz silicon wiresawing in commercial use wiresawing quartz silicon non-ferrous metals Contact us today to see how our CARBOREX(r) silicon carbide can help your business expand and prosper! Our grades are manufactured to exacting standards; closely controlled particle shapes ensure fast cutting speed superior finishes while prolonging wear life resulting in fast cutting speed superior finish results fast cutting speeds; fast cutting speeds; superior finish finishing performance as well as long wear life over their respective grades ensuring fast cutting speeds while simultaneously offering fast cutting speeds while producing faster cuts; fast cutting speeds; superior finish performance as well as long wear life over their respective grades allowing fast cutting speeds while offering fast cutting speeds while offering fast cutting speed; superior finishes; long wear life expectancies are all manufactured to ensure their respective specifications to provide fast cutting speed; superior finish performance while offering fast cutting speeds while yielding long wear life with extended wear life expectancies over their respective grades manufactured to exacting specs with exact grading to control of particle shapes ensure all grades manufactured to ensure quality products which in terms of wear life span. All grades manufactured to strict grading speeds while meeting rigorous demands from wear life span.

Electrical Conductivity

Silicon Carbide Powder can be used to produce an abrasive grit suitable for high precision lapping and polishing operations, with various grit sizes from coarse to fine available for this application. Furthermore, silicon Carbide can also be etched on ceramic glazes to produce reduction effects while its high thermal conductivity makes it suitable for electric heating applications.

Silicon Carbide (SiC) is an extremely hard, man made mineral with outstanding strength at elevated temperatures (at 1000degC, it is 7.5 times stronger than Al2O3), boasting low expansion coefficient and resistance to corrosion from acids. As it can withstand acid corrosion without expansion or contraction issues, it makes an ideal material for electric furnaces. Produced by heating silica sand combined with petroleum coke in an Acheson furnace to high temperatures which results in the formation of Green or Black Silicon Carbide grains that crystallineize into silicon carbide grains with color difference representing purity levels; Green SiC has less impurities compared with Black SiC; green SiC has lower impurities than Black SiC.

Silicon carbide not only serves as an abrasive but is also utilized in carborundum printmaking – a collagraph printmaking technique. Carborundum grit is applied to an aluminium plate and inked before wiping off areas that remain. Paper can then be printed from these uninked regions of the plate.

Based on its size and shape, powders can be sintered into high densities to produce refractory materials or electrical components. For refractory applications, coarse sized powder is typically combined with bonding phases like silicon nitride oxide, alumina or silica sand to enable compacted sinstering of the material.

Electrical applications often necessitate a higher purity level from their SiC material, so granulated powder may be doped with various cations to modify its properties and enhance conductivity. Pure SiC, C-SiC and Si-SiC bodies typically exhibit an n-type conductivity while increasing amounts of C additive can increase Seebeck coefficient values; for applications like electric heaters however it would be advantageous to opt for semiconducting p-type materials instead.