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Silicon Carbide Companies and Suppliers

IQS Directory provides a detailed list of silicon carbide manufacturers and suppliers. Find silicon carbide companies that can design, engineer, and manufacture silicon carbide to your specifications. Peruse our website to review and discover top silicon carbide manufacturers with roll over ads and complete product descriptions. Connect with the silicon carbide companies through our hassle-free and efficient request for quote form. You are provided company profiles, website links, locations, phone numbers, product videos, and product information. Read reviews and stay informed with product new articles. Whether you are looking for manufacturers of silicon carbide ceramic, silicon carbide companies, and silicon carbide crystalline of every type, IQS is the premier source for you.

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ARTICLES AND PRESS RELEASES

  • The Luxury of Bones, Stones and Clay

    In many American households the good china is usually a family treasure. In my family, our china plates are rarely used and spend most of their lives on display in the dinning room. When I was younger I believed the delicate whiteware received its name because it was imported from China. I later learned that my perception of the delicate nature and country of origin of china was far from the truth. Bone china was given its name because the whiteware is made from animal bone ash, china stone and...

  • Silicon Carbide: Super Strong Versatility

    I am intensely interested in getting to the base of things and figuring out how they are made. Many times that means working backwards to figure out where the components came from that make up the final product. One material that is found naturally in nature, but is extremely rare is silicon carbide. It was discovered in 1893 by Dr. Ferdinand Moissan who called the substance moissanite. While this material is rarely found naturally, synthetic silicon carbide is used in nearly all ceramic products. The hardness of this product can...

  • Global Growth in Demand for Silicon Carbide

    Silicon carbide, a material known for its hardness (exceeded in this only by cubic boron nitride, boron carbide, and diamond), is often employed in processes with extreme operating environments. This is due to the fact that, in addition to its hardness, silicon carbide is chemically inert to all acids and alkalies and is highly resistant to heat and wear. Silicon carbide has been mass-produced as an abrasive powder since 1893 and since then, the material has been used in ceramics, electrical and automotive applications, LEDs, and abrasive machining processes. In...

Industry Information

Silicon Carbide

Silicon carbide, also known as carborundum, is a ceramic product made up of silicon and carbon atoms bonded in a crystal lattice. It has the chemical formula SiC. It was first discovered by a young scientist named Dr. Edward Goodrich Acheson, who was trying to make synthetic diamonds. Silicon carbide is extremely hard, with low density, low thermal expansion and high thermal shock resistance. Not susceptible to harm by molten salts, alkalis or acids, it also displays extremely high levels of chemical inertness. Because of its superior characteristics, silicon carbide can be labeled as an engineering, technical or advanced ceramic. It is popular for use in the high stress environments of industrial and commercial settings. Some of the sectors in which silicon carbide is most commonly used include the abrasion, automotive, electrical conduction, semiconductor and structural industries. It is a common component of brake discs, bearings, seals, heat exchangers and grinding machines. In addition, in grit form, it is often used to create decorative glassware and the ground glass used in photographic equipment.

Silicon carbide is rarely found in nature and, therefore, it is more commonly produced synthetically. When it is found in nature, it is found as the mineral moissanite. Moissanite, discovered in 1893 by French chemist Henri Moissan. Mostly, moissanite is found in meteorites. When synthesized, as it usually is, it is made via either the Acheson process or the Lely process. The first method, named after its inventor, Dr. Edward Goodrich Acheson, involves heating a mixture of powdered carbon and silica or quartz sand to high temperatures and then gradually decreasing said temperatures. In addition to synthesizing silicon carbide, this method increases porosity. The Lely process, or Lely method, is named after its inventor, Jan Anthony Lely. It works by heating particles in an argon atmosphere similar to the one utilized inside an Acheson furnace. In doing so, it sublimates the particles. Other possible methods of synthesization include thermal decomposition and chemical vapor deposition. When done in a low heat and inert atmosphere, the thermal decomposition of polymethylsiloxane generates pure silicon carbide. In addition, using this method, manufacturers can pre-form the polymer before allowing it to turn into a ceramic. Chemical vapor deposition works well in the production of cubic silicon carbide. Unfortunately, however, the process is very expensive, so interested parties would do well to avoid this method unless absolutely necessary. Once formed, the grains or crystals of silicon carbide may be bound into any number of products. Methods available to aid manufacturers in product formation include deposition, sintering, fusing, firing, hipping, hot pressing, pressure casting, slip casting and injection molding.

Regardless of how it is formed, the purity of a sample of silicon carbide can be determined by the color of its crystals. The most pure samples have colorless crystals or crystals of green or pale yellow. Tainted samples may have brown, black or blue crystals. Some of the substances commonly responsible for such discolorations include iron, nitrogen and aluminum. All three substances will decrease the electrical conductivity of a silicon carbide product. In general, however, silicon carbide has a purity of over 99.9995%. The three most commonly produced commercial grades of silicon carbide are sintered silicon carbide (SSC), nitride bonded silicon carbide (NBSC) and reactive bonded silicon carbide (RBSC). However, several other grades exist as well, such as SiAlON bonded silicon carbide and clay bonded silicon carbide. The latter is generally reserved for refractory applications, and manufacturers typically make and/or keep several variations of it on site. RBSC maintains good properties at high heats and, therefore, it is also used for refractory applications.

Note that, because it has zero porosity, silicone carbide is much less likely to trap cleaning solutions or harmful particles and does not allow toxins or contamination to escape into the environment. Silicon carbide is also easy to clean and can endure rigorous cleaning processes. It is used endlessly to make products, such as: heating elements, electric systems, abrasive tools, cutting tools, automobile parts, foundry crucibles, jewelry, thin filament pyrometry, nuclear fuel cladding, nuclear fuel particles, electronic circuit elements, power electronic devices, automobile parts and structural elements. It is used just as endlessly to assist in applications related to: astronomy, steel production, catalyst support, graphene production and carborundum printmaking. There can be no doubt that silicon carbide and silicon carbide products are worthwhile investments. Interested parties should contact an experienced and skilled silicon carbide distributor today. Some of the best ones around are listed right here on this page.


Engineering Properties*

Silicon Carbide
Mechanical
SI/Metric (Imperial)

SI/Metric

(Imperial)

Density

gm/cc (lb/ft3)

3.1

(193.5)

Porosity

% (%)

0

(0)

Color

black

Flexural Strength

MPa (lb/in2x103)

550

(80)

Elastic Modulus

GPa (lb/in2x106)

410

(59.5)

Shear Modulus

GPa (lb/in2x106)

Bulk Modulus

GPa (lb/in2x106)

Poisson’s Ratio

0.14

(0.14)

Compressive Strength

MPa (lb/in2x103)

3900

(566)

Hardness

Kg/mm2

2800

Fracture Toughness KIC

MPa•m1/2

4.6

Maximum Use Temperature
(no load)

°C (°F)

1650

(3000)

Thermal

Thermal Conductivity

W/m•°K (BTU•in/ft2•hr•°F)

120

(830)

Coefficient of Thermal Expansion

10–6/°C (10–6/°F)

4.0

(2.2)

Specific Heat

J/Kg•°K (Btu/lb•°F)

750

(0.18)

Electrical

Dielectric Strength

ac-kv/mm (volts/mil)

semiconductor

Dielectric Constant

Dissipation Factor

Loss Tangent

Volume Resistivity

ohm•cm

102–106

dopant dependent

*All properties are room temperature values except as noted.
The data presented is typical of commercially available material and is offered for comparative purposes only. The information is not to be interpreted as absolute material properties nor does it constitute a representation or warranty for which we assume legal liability. User shall determine suitability of the material for the intended use and assumes all risk and liability whatsoever in connection therewith.

Silicon Carbide
Silicon Carbide
Silicon Carbide
Silicon Carbide – San Jose Delta Associates, Inc.
Silicon Carbide – San Jose Delta Associates, Inc.
Silicon Carbide – C-Mac International, LLC






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