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Performance advantages and applications of silicon carbide ceramics

Time: 2024-03-20   Writer: mingrui
Silicon carbide ceramic is an inorganic non-metallic material made of silicon carbide (SiC) as the main raw material and sintered at high temperature. Silicon carbide ceramics have a variety of excellent properties, such as high hardness, high strength, high temperature resistance, oxidation resistance, corrosion resistance, low thermal expansion coefficient and good thermal conductivity and electrical properties. These properties make silicon carbide ceramics widely used in many fields.
Some silicon carbide ceramic components produced by Mingrui Ceramics.
Some silicon carbide ceramic components produced by Mingrui Ceramics.

Properties of silicon carbide ceramics:

1. Hardness and strength: Silicon carbide ceramics have extremely high hardness and strength. Its hardness is second only to diamond, and its strength is also very high, more than 5 times that of steel. This makes silicon carbide ceramic an ideal wear-resistant material.
2. High temperature resistance: Silicon carbide ceramics have good high temperature stability and can work stably for a long time at high temperatures up to 2700°C. Its high temperature strength and creep resistance are the best among ceramic materials.
3. Thermal conductivity: Silicon carbide ceramic has a very high thermal conductivity, which is 3-4 times that of copper. It can effectively dissipate heat and is a high-quality refractory material.
4. Corrosion resistance: Silicon carbide ceramics have excellent corrosion resistance and can work stably in various chemical media such as acids, alkalis, and salts.
5. Electrical properties: Silicon carbide ceramics also have excellent electrical properties and can be used to manufacture electronic devices and optical devices.

Advantages of silicon carbide ceramics:

1. Silicon carbide has high electrical conductivity, its electrical conductivity can reach 60%-80%, and it is a good electronic material.
2. It has high temperature resistance, with a melting point as high as 2800°C, and can maintain stability under high temperature conditions.
3. It has excellent thermal stability, is not easy to change in high temperature environments, and has a high service life.
4. Silicon carbide has high strength and can withstand high pressure and high-intensity loads.
5. Has good wear resistance and can resist friction and wear.
6. It has good radiation resistance and can resist the radiation of high-energy particles.

Applications of silicon carbide ceramics:

Silicon carbide can be used for cutting and precision grinding of crystals, precision grinding of hard glass, slicing of single crystal silicon and polycrystalline silicon rods, precision grinding of single crystal silicon wafers, processing of superhard metals, and soft metals such as copper and copper alloys. processing and other fields.
In the field of electronics, silicon carbide can develop power supplies that are more suitable for harsh conditions such as high power, high frequency, high temperature, and high voltage due to its advantages such as large band gap, large drift rate, large thermal conductivity, and large breakdown field strength. Semiconductor device.
Silicon carbide is also widely used in abrasives, wear-resistant agents, abrasive tools, advanced refractory materials, fine ceramics and other fields.
In general, silicon carbide plays an important role in many industries due to its excellent performance and wide range of applications. With the continuous advancement of science and technology and the expansion of application fields, the application prospects of silicon carbide will be broader.

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