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Silicon Carbide

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Low density, high strength and high hardness are characteristics shared with many other ceramics. Read More…

Silicon Carbide Silicon carbide, or carborundum, is an extremely hard ceramic composed of carbon and silicon atoms bonded in a crystal lattice. The unique characteristics of this substance make it highly desirable in several industrial and commercial settings.
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Leading Manufacturers

Myrtle Beach, SC  |  609-397-8330, 609-397-8341

As a manufacturer and stocking distributor of industrial and technical ceramics, LSP carries the most diversified inventory of ceramic tubes, spacers, bushings, etc. in the industry.

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LSP Industrial Ceramics, Inc. $$$

Cheswick, PA  |  412-406-7171

C-Mac International, LLC is a custom ceramics supplier. We provide advanced ceramic component parts manufacturing for a variety of industries and provide solutions to many ceramic needs.

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C-Mac International, LLC $$$

Quakertown, PA  |  215-536-3500

Insaco provides custom grinding and machining services to fabricate precision parts from sapphire, quartz, and most technical ceramics including alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and others.

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Insaco Inc. $$$

Fremont, CA  |  510-249-9700

Applied Ceramics is a fabricator of custom-made ceramic parts designed for semiconductor, solar, fuel cell, oil drilling, nuclear, and numerous other industries. Materials include ACI-995 Alumina, Zirconia, and more. Our extensive experience with precision designs supported by our team of specialists ensures that our customers have the ideal solution to meet the needs of their application. To get started, contact us today!

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Applied Ceramics $$$

Newark, NY  |  888-285-5994

Refractron partners with companies that have fluid control applications requiring plug, seat, ball & seat or check ball components to name a few and that require a lower cost, strong, tough product of low wear. We manufacture ceramic plungers for high pressure pumps and waterjet cutting. Our aquaculture diffusers are custom manufactured in the shape of discs, plates or tubes constructed from glass-bonded silica, porous alumina or silicon carbide.

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Refractron Technologies Corp. $$$

Hubertus, WI  |  800-869-2008

Technical Products, Inc. has been manufacturing and distributing a wide variety of ceramics for 30 years. We are capable of meeting the demands of our constantly changing industry with our modern, fully equipped facility. We can produce prototypes as well as full production orders. Visit our website to learn more about our ceramic manufacturing capabilities.

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Technical Products, Inc. $$$
placeholder image LSP Industrial Ceramics, Inc. C-Mac International, LLC Insaco Inc. Applied Ceramics Refractron Technologies Corp. Technical Products, Inc.

Silicon carbide offers low thermal expansion, high thermal conductivity, strong thermal shock resistance and elevated chemical intertness as it is not attacked by acids, alkalis or molten salts. A modern ceramic material, silicon carbide is classified as an advanced, technical, or engineering ceramic due to its superior attributes. Silicon carbide components are common to industrial environments as they are particularly well suited to the high stress needs of these settings.

Electrical conduction, semiconductors, automotive, structural and abrasion industries are just a few of the many sectors in which silicon carbide is utilized. Grinding machines, brake discs, seals, bearings and heat exchangers are all commonly made of this material, maximizing its heat resistance and conductivity. Silicon carbide grit can also be used to create ground glass for use in photographic equipment and in the creation of decorative glassware.

Although natural occurrence of silicon carbide is rare, several processes allow for large production of man-made replicas of this substance. The Ascheson furnace and Lely are commonly used methods. The Ascheon technique involves heating silica, carbon and other additives that increase porosity to maximum temperatures and then gradually lowering them. The Lely process sublimates the particles in an argon atmosphere by heating them in a fashion similar to the Ascheson furnace. Chemical vapor deposition is sometimes used to produce cubic silicon carbide, though it is a very expensive option.

Thermal decomposition of polymethylsilyne also yields pure silicon carbide when it occurs in an inert atmosphere with low temperatures. This process has the added advantage of pre-forming the polymer before it is transformed into a ceramic. When silicon carbide is formed, no matter the process, the color of the crystals helps to determine the purity of a given sample. Colorless, pale yellow and green crystals are the purest. Brown, blue or black crystals indicate some degree of contamination and are less pure.

Common imputiries include nitrogen, aluminum and iron, all of which affect the electrical conductivity of the final product. The crystals or grains produced by any of these methods are then bonded together by manufacturing techniques such as sintering, firing, hot pressing, hipping, extrusion, fusing, slip or pressure casting, injection molding and deposition.

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