Introduction to silicon carbide ceramic materials
Silicon carbide, with SiC as its main component, is a ceramic material with excellent corrosion resistance and is widely used in mechanical seals and pump components. It maintains excellent strength even at high temperatures, up to 1400℃, making it suitable for manufacturing high-temperature parts in the petrochemical, aerospace, and automotive industries. The superior properties of silicon carbide have driven continuous development in industrial technology, providing reliable solutions for industrial production.
Features
Silicon carbide (SiC) is a high-performance ceramic material with excellent high-temperature stability, electrical conductivity and corrosion resistance.
1. Excellent strength at high temperatures
Silicon carbide retains its strength at extremely high temperatures, making it an ideal choice for many high-temperature applications.
High-temperature industrial applications: Silicon carbide is widely used in high-temperature industrial fields, such as furnaces, heat treatment equipment, and high-temperature reactors. Its high-temperature strength and stability allow it to maintain structural integrity at temperatures up to 1400°C or even higher, and withstand extreme thermal stress and pressure.
2. Excellent performance of thermally conductive and electrically conductive semiconductors
Silicon carbide has extremely high thermal conductivity and electrical semiconductor properties, which makes it widely used in the electronics industry and high-power electrical appliances.
Thermal Conductivity: Silicon carbide is an excellent thermal conductor, with a thermal conductivity higher than many metals. This makes it extremely useful in applications requiring efficient heat dissipation, such as heat sinks for electronic devices and electronic packaging materials.
Electrical Semiconductor Properties: Silicon carbide possesses semiconductor properties, with high electron mobility and low resistivity, making it excellent for power electronic devices. For example, silicon carbide power devices exhibit lower losses and higher efficiency at high temperatures and high frequencies.
3. High hardness and corrosion resistance
Silicon carbide has excellent chemical and physical stability, exhibiting high hardness and corrosion resistance.
| Primary characteristics | ||
| Type | Unit | Silicon Carbide |
| Tworzywo | \ | SiC |
| Colour | \ | Black |
| Density | g/cm3 | 3.1 |
| Mechanical properties | ||
| Type | Unit | Silicon Carbide |
| Tworzywo | \ | SiC |
| Colour | \ | Black |
| Flexural Strength(20℃) | Mpa | 400 |
| Compressive Strength(20℃) | Mpa | 2600 |
| Modulus of Elastic(young)(20℃) | Gpa | 410 |
| Tracture Toughness(20℃) | MPam½ | 4 |
| Poi sion’s Ratio(20℃) | \ | 0.16 |
| Vickers Hardness(HV1) | Gpa(kg/mm2) | 2100 |
| Rockwell Hardness(45N) | R45N | 88 |
| Thermal properties | ||
| Type | Unit | Silicon Carbide |
| Tworzywo | \ | SiC |
| Colour | \ | Black |
| Thermal Expansion Coefficient | 10-6K-1 | 4 |
| Thermal Conductivity | W/mk | 100 |
| Thermal Shock Resistance | △T.℃ | 400 |
| Specific Heat Capacity | J/g·k | 0.67 |
| Max working Temperature(In Oxidizing) | ℃ | 1600 |
| Electrical properties | ||
| Type | Unit | Silicon Carbide |
| Tworzywo | \ | SiC |
| Colour | \ | Black |
| Vol une Resistivity at 20℃ | Ωcm | 105 |