Siliciumcarbid til keramik
Siliciumcarbid til keramik
Silicon carbide ceramic is a high-tech ceramic, mainly made of submicron silicon carbide powder. Silicon carbide has high hardness, and silicon carbide ceramics made by mature technology have good wear resistance, high temperature resistance and corrosion resistance.
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Why SiC is Ideal for Ceramics
- Høj hårdhed: Med en mohs hårdhed af 9.5, silicon carbide is nearly as hard as diamond, providing ceramics with excellent wear resistance.
- Høj termisk ledningsevne: SiC has exceptional thermal conductivity, making it suitable for high-temperature applications.
- Low Thermal Expansion: The low thermal expansion coefficient of silicon carbide ensures dimensional stability under varying temperatures.
- Corrosion Resistance: SiC is highly resistant to corrosion from acids, alkalis, and molten metals, enhancing the longevity of ceramic products.
- High Temperature Resistance: Silicon carbide can withstand extreme temperatures, making it ideal for use in furnace linings and high-temperature machinery.
Applications of Silicon Carbide Ceramics
Ceramic Bearings
SiC bearings provide excellent wear and corrosion resistance, making them ideal for use in extreme environments such as high-temperature or chemically harsh settings.
Armor Ceramics
Silicon carbide is widely used in the production of lightweight ceramic armor due to its exceptional hardness and toughness. This armor is used in military applications and personal protective equipment.
Kiln Furniture
Silicon carbide kiln furniture is designed to endure high temperatures and rapid heating cycles without cracking, warping, or degrading over time.
Wear-Resistant Ceramics
Silicon carbide ceramics are often used in pumps, valves, and seals, where extreme wear and chemical corrosion occur.
Heat Exchangers
With high thermal conductivity and corrosion resistance, SiC ceramics are used in heat exchangers, especially in chemical processing applications.
Grades of SiC for Ceramics
- Sort siliciumcarbid (C)
- High hardness and thermal conductivity.
- Primarily used in abrasive and cutting tools.
- Grønt siliciumcarbid (GC)
- Purity of over 99%, used in fine ceramics for high-precision applications such as semiconductor manufacturing.
- Reaction Bonded Silicon Carbide (RBSC)
- Highly durable and often used in kiln furniture and high-stress ceramic components.
- Sintered Silicon Carbide (SSiC)
- Known for its exceptional hardness and corrosion resistance, often used in mechanical seals and pump components.
Types of Silicon Carbide Abrasives
Sort siliciumcarbid
Sort siliciumcarbid er et meget brugt slibende produkt, Med fremragende slidstyrke, høj hårdhed, høj densitet, lave urenheder og andre fordele, Almindeligt anvendt til slibning af sandblibning, polering, Gratis slibning, gør forskellige slibemidler, osv.
Grønt siliciumcarbid
Grønt siliciumcarbid er lavet af kvartssand og petroleumskoks raffineret i en modstandsovn, På grund af dets relativt stabile kemiske egenskaber, høj termisk ledningsevne, Lav koefficient for termisk ekspansion, og god slidstyrke.
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