Black silicon carbide is an exceptionally hard material. Due to its superior grinding, cutting and high temperature resistance, it finds widespread application in abrasives and ceramics applications.
Refractories and metallurgy also use calcium oxide, with deoxidizer use providing impurity reduction on iron and steel as well as producing wear-resistant ceramics that can conduct electricity.
High Hardness
Black silicon carbide is a hard abrasive material which can be used for cutting, grinding and blasting applications. It is ideal for processing ceramics as well as non-ferrous non-ferrous materials like cast iron. Black silicon carbide also serves as a deoxidizer and high temperature resistant material in metallurgy; its hardness falls somewhere between corundum and diamond. Black silicon carbide production typically involves melting petroleum coke together with high quality silica along with additives like salt in an industrial resistance furnace at high temperature; Mohs hardness typically lies somewhere between 9-9.5 while its Vickers Hardness stands between 2800-3200 HV.
Black silicon carbide’s hardness is determined primarily by its crystal structure and purity, particularly its hexagonal crystal structure similar to Wurtzite; tighter arrangements of atoms makes this form much harder than cubic polymorphs like b-SiC. Sintering degree also plays an integral part; higher degrees leads to greater hardness.
Black silicon carbide features an extremely low expansion coefficient and is resistant to stress, making it the ideal material for use in high-end cookware fluorocoatings. Compressive strength of black silicon carbide stands at 186 KN/cm2, and its crushing strength 5800 KPa/cm2. Furthermore, black silicon carbide doesn’t react with acids or alkalis and offers strong corrosion resistance while being fireproof with excellent thermal insulation properties.
Good Mechanical Resistance
Black silicon carbide stands out as an exceptional material with its strong strength, durability, and resistance to corrosion – qualities which make it ideal for industrial applications. It has a fracture toughness of 6.8 MPa m0.5 while its flexural strength measures 490 MPa making it one of the hardest known materials. These properties make black silicon carbide an excellent material choice to produce abrasives which can stand up under even extreme conditions.
Black silicon carbide is chemically inert, unaffected by acids, alkalis or molten salts and its high thermal conductivity and low thermal expansion coefficient allow it to withstand temperatures up to 1600degC without thermal expansion coefficient fluctuations causing temperature spikes or thermal contraction. With its resistance to oxidation as an added feature, silicon carbide can be found in applications in harsh environments like semiconductor manufacturing.
GNPGraystar provides both Black and Green Silicon Carbide grains and powders, giving you the freedom to select the ideal material for your application. Both materials are manufactured using quartz sand, petroleum coke, high-grade silica powders as raw materials which are then melted at very high temperatures in an Acheson furnace (some producers use anthracite as an energy saving measure), yielding grains with high bulk density, toughness, density. Macrogrits of Black Silicon Carbide are well suited for precision ceramic applications while Microgrits excel when pressure blasting lapping and bonding applications – ideal for pressure blasting, lapping and bonding applications respectively.
Excellent Thermal Conductivity
Black silicon carbide is an efficient thermal conductor and an excellent replacement for aluminum oxide in applications requiring high temperature resistance, boasting low thermal expansion rates. One of the world’s premier industrial ceramic materials, black silicon carbide has numerous applications such as abrasives and advanced refractories – two major uses.
Black silicon carbide offers greater toughness and grinding ability compared to its green counterpart, making it ideal for processing low tensile strength metals such as glass, ceramics and refractories. Furthermore, this material makes excellent cutting wheels as well as honing tools used in aerospace industries for honing parts to achieve precise dimensions with smooth surfaces.
Silicon carbide dust inhalation can cause lung diseases, so workers must wear full-body protective clothing and related labor protection articles when handling silicon carbide material. Because this material is very hard and brittle, it should be stored in a cool, ventilated, dry warehouse that does not contain alkalis or acids or subjected to extreme temperatures.
Silicon Carbide (SiC) is a nonmetallic carbide material composed of carbon and silicon atoms bonded together covalently and boasting an Mohs hardness of 9.2. With its diamond-like structure, SiC is one of the strongest and hardest advanced ceramic materials, boasting outstanding physical properties such as hardness and chemical resistance that make it an essential industrial material.
Good Electrical Resistance
Silicon carbide is an impressive material, due to its combination of strength, abrasion resistance and thermal stability. Its versatile properties allow it to be utilized across several industries such as construction, mining and automotive manufacturing; additionally it has also proven useful as a semiconductor with excellent mechanical properties such as high permeability and controllable thermal and electrical conductivities investigated as possible functional applications1-8
Black silicon carbide is produced by heating silica sand with petroleum coke to high temperatures in an open furnace, producing brown to black silicon carbide grains that form crystallizes as the product cools. Green and black silicon carbides vary based on purity of their raw materials used.
Black silicon carbide has many applications within metallurgical products such as deoxidizers, cast iron parts and non-ferrous metal refractory materials. Furthermore, its unique hardness makes it the ideal material to remove tough coatings or contaminants from surfaces.
As silicon carbide can be toxic when inhaled, workers should wear full-body protective clothing and labor safety items while handling it to protect themselves from its dangers. When inhaled, it may deposit its powder deep within a person’s lungs causing serious lung diseases to emerge; furthermore, as it’s extremely hot it must also be managed carefully so as not to burn or heatstroke people.
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