Overview of Cast silicon carbide
Silicon Carbide (SiC), also known as carborundum, is a synthetic ceramic compound made up of silicon and carbon atoms. Known for its exceptional hardness, thermal conductivity, and resistance to chemical reactions and wear, SiC is a versatile material widely used in high-performance applications that demand superior physical and electronic properties. Its unique crystal structure, which can exist in several polytypes, contributes to its multifaceted utility across various industries.
Features of Cast silicon carbide
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Exceptional Hardness: Silicon carbide ranks just below diamond and boron carbide in hardness, making it an ideal abrasive material.
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High Thermal Conductivity: It is an excellent heat conductor, capable of dissipating heat rapidly, which is crucial for high-power electronic and semiconductor devices.
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Chemical Stability: Resistant to most acids, alkalis, and salt solutions, SiC maintains its properties even under harsh chemical environments.
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Wide Bandgap Semiconducting Material: As a wide bandgap semiconductor, it operates at higher temperatures and frequencies than conventional semiconductors like silicon.
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Mechanical Strength and Wear Resistance: Offers high mechanical strength and excellent wear resistance, suitable for mechanical seals, bearings, and pump components.
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Thermal Shock Resistance: Can withstand rapid temperature changes without cracking or degrading, important for applications involving cyclic heating and cooling.
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Parameters of Cast silicon carbide
Cast silicon carbide is a type of semiconductor material that has high reflectivity and low resistance, making it useful in applications such as light sources, cells, and other devices with active reflectivity. The parameters of cast silicon carbide, including its crystal structure, temperature range, yield, and composition, can affect its properties and performance.
Here are some common parameters for cast silicon carbide:
* Crystal Structure: Cast silicon carbide is composed of multiple layers of single crystals with different atomic positions, sizes, and orientations. This results in a wide range of mechanical and electronic properties, including high mobility, ease of manufacturing, and reliability.
* Temperature Range: CAST SiC has a relatively short melting point at around 290°C and a high melting point at around 315°C, which makes it suitable for high-temperature applications. The melting temperature depends on the direction and number of layers of silicon carbide in the crystal structure.
* Yield: The yield of cast silicon carbide depends on factors such as the amount of silicon used in the synthesis process, the grain size and orientation, and the amount of processing conditions. A higher percentage of silicon in the synthesis process can lead to better yields.
* Composition: Cast silicon carbide typically contains several impurities, such as carbon nitride, boron silicate, and iron impurities, that can affect its performance. Some impurities may be synergistic or compete with each other in terms of their effects on the yield and electrical properties.
Overall, casting silicon carbide has a variety of parameters that can affect its physical and chemical properties, and choosing the right parameters for your application is critical to achieving optimal performance.
(Cast silicon carbide)
Applications of Cast silicon carbide
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Semiconductor Devices: Used in high-voltage, high-frequency, and high-temperature power electronics, such as MOSFETs, Schottky diodes, and power modules.
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Abrasive Materials: As an abrasive grain in grinding wheels, sandpapers, and cutting tools due to its hardness and wear resistance.
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Refractories and Furnace Linings: In high-temperature furnaces and kilns because of its outstanding thermal stability and resistance to corrosion.
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Ceramic Armor: In lightweight armor systems due to its combination of hardness, toughness, and low density.
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Chemical Process Equipment: For pumps, valves, and seals in corrosive chemical environments where metals would corrode.
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Wire Sawing: As the abrasive medium in wire saws for slicing silicon wafers in the semiconductor industry and gemstones.
Company Profile
MyCarbides is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality carbides and relative products.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality carbide materials and relative products, please feel free to contact us or click on the needed products to send an inquiry.
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FAQs of Cast silicon carbide
Q: How is Cast silicon carbide produced?
A: Cast silicon carbide is primarily synthesized through the Acheson process, which involves heating a mixture of silica sand and carbon (usually in the form of coke) in an electric furnace at high temperatures.
Q: Is Cast silicon carbide conductive?
A: Yes, Cast silicon carbide is a semiconductor material with unique electronic properties, including high breakdown voltage and thermal conductivity, making it suitable for power electronics.
Q: Can Cast silicon carbide be used in extreme environments?
A: Absolutely, SiC’s high temperature stability, resistance to radiation damage, and ability to withstand thermal shocks make it ideal for applications in space, nuclear reactors, and deep-well drilling.
Q: What gives Cast silicon carbide its unique properties?
A: The covalent bond structure of Cast silicon carbide, along with its tight crystal lattice, contributes to its hardness, high melting point, and resistance to wear and corrosion.
Q: Is Cast silicon carbide biocompatible?
A: SCast silicon carbide has been investigated for biomedical applications due to its biocompatibility, inertness, and durability, with potential uses in orthopedic implants and surgical instruments.
(Cast silicon carbide)
