Black Silicon Carbide
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Silicon carbide (SiC) is an inorganic compound with the chemical formula SiC. It is produced through high-temperature smelting in a resistance furnace using raw materials such as quartz sand, petroleum coke (or coal coke), and sawdust (salt is required for producing green silicon carbide).
Silicon carbide contains two common basic varieties: black silicon carbide and green silicon carbide. Black silicon carbide contains sic about 95%, so the toughness is higher than green silicon carbide. It is widely used for processing low tensile strength materials like glass, ceramics, stone, refractory material, cast iron and nonferrous metal etc. Green silicon carbide contains sic about 97% above with good self-sharpening, so it is used for processing hard alloy, titanium alloy and optical glass as well as cylinder jacket and fine grinding cutting tools.
silicon carbide specification
| Grade | SIC(e) | Free Carbon | Fe203 |
| SIC 98.5 | 98.5 | 0.2 | 0.6 |
| SIC 97 | 97 | 0.3 | 1.2 |
| SIC 95 | 95 | 0.6 | 1.2 |
| SIC 90 | 90 | 1 | 1.2 |
| SIC 88 | 88 | 4 | 1.5 |
| SIC 85 | 85 | 5 | 3 |
| SIC 80 | 80 | 5 | 3 |
silicon carbide Features
Exceptional Hardness
With a Mohs hardness of 9.2, black silicon carbide is harder than most materials, making it ideal for abrasive applications.
High Thermal Conductivity
It efficiently dissipates heat, which is critical in high-temperature applications.
Chemical Resistance
Black silicon carbide is resistant to many chemical reactions, enhancing its durability and longevity.
Applications of Silicon Carbide
Abrasives
Used in grinding wheels, sandpaper, and cutting tools.
Refractories
Ideal for kiln linings and high-temperature furnaces.
Electronics
Essential in semiconductor devices for its thermal and electrical properties.
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