Silicon carbide ceramic are technical ceramics with strong covalent bonds, the main component of which is SiC. SiC ceramics not only have excellent room temperature mechanical properties, such as high bending strength, excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, but also high temperature mechanical properties (strength, creep resistance etc.) are the best known ceramic materials. The high-temperature strength of hot-pressed sintering, pressureless sintering, and hot isostatic pressing sintered materials can be maintained up to 1600°C, making them the materials with the best high-temperature strength among ceramic materials. Oxidation resistance is also the best among all non-oxide ceramics. Also known as emery.
Silicon carbide ceramic parts
Silicon carbide ceramic have many excellent properties and characteristics, including:
1, Mechanical properties: The mechanical strength of silicon carbide ceramic is higher than that of corundum ceramics, and it has excellent wear resistance and bending strength. Its compressive strength is also significantly higher than that of corundum, which can reach 224MPa.
2, Thermal performance: Silicon carbide ceramic has a high thermal conductivity, second only to beryllium oxide and aluminum nitride ceramic. Therefore, it is suitable for various harsh environments, such as high temperature and high humidity. In addition, silicon carbide ceramic has excellent high temperature resistance and can maintain high strength and hardness in an environment of 1400 degrees Celsius.
3, Chemical properties: Silicon carbide ceramic has excellent oxidation resistance and remain stable even at high temperatures. In addition, its corrosion resistance is also good, and it has high resistance to the erosion of acids, alkalis, salts and other chemical substances.
4, Other advantages: Silicon carbide ceramic is less dense than metals, which makes devices made of silicon carbide lighter. At the same time, its hardness is second only to diamond and boron carbide, and it has extremely high wear resistance and low friction coefficient. The friction force is relatively small and the surface roughness is small.
Due to the above excellent properties and characteristics, silicon carbide ceramic are widely used in many fields, such as:
1, Mechanical seal: Silicon carbide ceramic can be made into mechanical seals, which have the advantages of small friction coefficient, good wear resistance, high strength, corrosion resistance, etc., and can be used in various working conditions such as petroleum, chemical industry, fertilizer, pharmaceutical, electric power, metallurgy, etc.
2, Electronic industry: The excellent electrical properties and high-temperature stability of silicon carbide ceramics have made it widely used in the electronic industry, such as in the manufacture of power devices and high-temperature and high-frequency devices.
3, Automotive industry: Silicon carbide ceramic have good wear resistance and corrosion resistance and can be used to manufacture automotive engine parts, such as valves, valve seats, cylinder liners, etc.
4, Other fields: Silicon carbide ceramic can also be used to make high-temperature resistant materials, wear-resistant materials, mechanical parts, aerospace materials, etc.
In short, silicon carbide ceramic is an excellent material with a wide range of applications, and its performance and characteristics make it irreplaceable in many fields.
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