Silicon Carbide (SiC) Ceramics
Silicon carbide ceramics have excellent high-temperature mechanical properties, making them commonly used in manufacturing cutting tools, wear-resistant components, heat exchangers, and electronic devices. Its maximum operating temperature is up to 1600 ℃, and its oxidation resistance is also the best of all non-oxide ceramics.
HM is a leading supplier and manufacturer of high-quality Silicon Nitride Ceramics products, offering customized solutions to meet specific requirements.
Silicon carbide ceramics have excellent high-temperature mechanical properties, making them commonly used in manufacturing cutting tools, wear-resistant components, heat exchangers, and electronic devices. Its maximum operating temperature is up to 1600 ℃, and its oxidation resistance is also the best of all non-oxide ceramics.
HM is a leading supplier and manufacturer of high-quality Silicon Nitride Ceramics products, offering customized solutions to meet specific requirements.
Silicon Carbide (SiC) Ceramics There are 17 products.
Silicon Carbide Ceramic Ball | SiC Ceramic...
Silicon Carbide (SiC) Ceramic Ball has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance, mainly used as grinding media and precision bearings. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Ceramic Ball, offering competitive prices and...
Silicon Carbide Crucible | SiC Ceramic...
Silicon Carbide (SiC) Crucible is a high-performance tool designed for laboratory and industrial melting. It has excellent high-temperature resistance, mechanical strength, and chemical stability. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Crucibles, offering competitive prices and customized...
Silicon Carbide Disc | SiC Ceramic Disc
Silicon Carbide (SiC) Disc has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) discs, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Plate | SiC Ceramic Plate
Silicon Carbide (SiC) Plate has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) plates, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Sheet | SiC Sheet
Silicon Carbide (SiC) Sheet has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) sheets, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Substrate | SiC Substrate
Silicon Carbide (SiC) Substrate is an ideal thermal substrate and packaging material for large-scale integrated circuits, possessing excellent high-temperature mechanical properties. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Substrates, offering competitive prices and customized solutions to meet...
Silicon Carbide Ring | SiC Ring
Silicon Carbide (SiC) Ring has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Rings, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Rod | SiC Rod
Silicon Carbide (SiC) Rod has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Rods, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Tube | SiC Tube
Silicon Carbide (SiC) Tube has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Tubes, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Nozzle | SiC Nozzle
Silicon Carbide (SiC) Nozzle has excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Nozzles, offering competitive prices and customized solutions to meet specific requirements.
Silicon Carbide Structural Components |...
Silicon Carbide (SiC) Structural Components have excellent corrosion resistance, extremely high hardness, abrasion resistance, and high-temperature resistance. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Structural Components, offering competitive prices and customized solutions to meet specific...
Silicon Carbide Trays | SiC Trays
Silicon Carbide (SiC) Trays are commonly used in the ICP etching process, exhibiting high hardness, abrasion resistance, high thermal conductivity, corrosion resistance, etc. Heeger Materials is a professional supplier and manufacturer of high-quality Silicon Carbide (SiC) Trays, offering competitive prices and customized solutions to meet specific...
Silicon carbide (SiC) is a high-performance ceramic material known for its high hardness, high strength, excellent thermal conductivity, low coefficient of thermal expansion, and good corrosion resistance, widely used in mechanical seals, pump parts, semiconductor manufacturing equipment, and other fields. The highest working temperature is up to 1600 ~ 1700 ℃.
Silicon Carbide (SiC) Ceramics Properties Parameter
Item | Unit | SiC |
Content | VOL% | ≥99.3 |
Density 20℃ | g/cm3 | ≥3.10 |
Open Porosity | VOL% | 0 |
Rockwell hardness | R45N | 95 |
Vickers hardness | kg/mm2 | 2450 |
Flexural Strength 20℃ | MPa | 320-400 |
Flexural Strength 1300℃ | MPa | 360-410 |
Coefficient of thermal expansion | 10(-6)*k(-1) | 4.0 |
Thermal conductivity 20℃ | W.m(-1)*k(-1) | 140 |
Silicon Carbide (SiC) Ceramics Advantages
| Property | Description | Advantages |
|---|---|---|
| Hardness | Extremely hard, second only to diamond. | Ideal for cutting tools and wear-resistant applications. |
| Wear Resistance | Excellent wear resistance suitable for high-wear environments. | Ensures long-lasting performance and durability. |
| High-Temperature Stability | Performs well at temperatures up to 1600°C. | Suitable for demanding applications in high-temperature environments. |
| Thermal Conductivity | High thermal conductivity for efficient heat dissipation. | Improves performance by allowing rapid heat dissipation. |
| Chemical Stability | Good resistance to various chemical media. | Makes it suitable for aggressive environments. |
| Electrical Conductivity | Effective semiconductor material with excellent conductivity. | Ideal for high-frequency devices and power modules. |
Silicon Carbide (SiC) Ceramics Sintering Processes
| Item | Description |
|---|---|
| Hot Pressing | Hot pressing involves placing silicon carbide powder in a mold while applying axial pressure (20-50 MPa) during heating. This enhances particle contact, diffusion, and flow, accelerating densification. It achieves over 99% theoretical density, but requires complex equipment and strict manufacturing processes, limiting its use to simple shapes and increasing production costs. |
| Pressureless Sintering | This process includes solid-state and liquid-phase sintering. Solid-state sintering requires high temperatures (>2000°C) and pure raw materials, leading to low toughness and grain growth. Liquid-phase sintering uses additives (like Y2O3) to achieve densification at lower temperatures and improves toughness by changing fracture modes from transgranular to intergranular. |
| Reaction Sintering | Reaction sintering mixes silicon carbide powder with carbon-containing materials, enabling a high-temperature reaction between residual silicon and carbon to create dense silicon carbide ceramics. It offers low sintering temperatures and shorter times but faces issues with density uniformity and high production costs due to stringent raw material requirements. |
| Recrystallization Sintering | This technique uses graded silicon carbide particles, where fine particles fill the pores of coarser particles. At temperatures above 2100°C, fine particles gradually evaporate and condense, forming new grain boundaries. The process results in high-precision, non-deforming products without additives, but it leads to lower strength due to minimal density change during sintering. |
| Microwave Sintering | Microwave sintering utilizes dielectric losses in a microwave electromagnetic field to uniformly heat materials to the sintering temperature. It allows for lower temperatures, faster heating rates, and improved density, accelerating mass transport to achieve fine-grained materials. |
| Spark Plasma Sintering | This innovative powder metallurgy technique employs high-energy electrical discharges to sinter materials quickly at lower temperatures. It activates powder surfaces, enhancing sintering quality and efficiency. The method can produce dense SiC ceramics using Al2O3 and Y2O3 additives, effectively removing impurities from powder surfaces. |
Silicon Carbide (SiC) Ceramics Applications
- Cutting Tools: Used to manufacture high-performance cutting tools and abrasives, enhancing machining efficiency.
- Electronics: Widely used in high-power and high-frequency devices, such as power modules and inverters.
- Automotive Industry: Applied in brake systems and high-temperature components, improving safety and durability.
- Aerospace: Utilized in engine components and other high-temperature, high-pressure applications.
- Coatings and Composites: Enhances the wear resistance and strength of coatings and composite materials.