Properties and Applications of Nano Silicon Carbide
- hope
- 2024-08-05 15:30:58
Nano silicon carbide (SiC) has a Mohs hardness of 9.5 and a microhardness of 2840-3320 kg/mm², placing it between corundum and diamond in terms of hardness. With mechanical strength higher than corundum, nano silicon carbide is the preferred material for wear-resistant additives. Below is an overview of the main applications of nano silicon carbide:
1. Manufacturing Precision Structural Ceramic Devices
Nano silicon carbide is used in the production of precision ceramic devices for industries such as metallurgy, chemical engineering, machinery, aerospace, and energy. Applications include sliding bearings, liquid fuel nozzles, crucibles, high-power high-frequency molds, and semiconductor components.
2. Metal and Other Material Surface Treatment
Nano silicon carbide is used for surface treatment of metals and other materials, such as tools, molds, heat-resistant coatings, heat dissipation coatings, anti-corrosion coatings, and wave-absorbing coatings.
3. Preparation of High-Performance Composite Materials
Nano silicon carbide is used in the preparation of metal matrix, ceramic matrix, and polymer matrix composites, enhancing their performance.
4. New Material for Modifying High-Strength Nylon Alloys
Adding β-SiC to high-strength nylon alloys increases tensile strength by 10% and wear resistance by 2.5 times compared to ordinary nylon. Applications include polymer parts for armored track vehicles, automotive steering components, textile machinery, mining machinery linings, and train components.
5. Enhancing Wear Resistance of Special Engineering Plastics (PEEK)
Nano silicon carbide improves the wear resistance of special engineering plastics such as polyether ether ketone (PEEK).
6. Applications in Rubber Tires
Adding nano silicon carbide to rubber tires increases wear resistance by 15% to 30%. Additionally, 20nm SiC is used in rubber rollers, printer fusers, and other wear-resistant, heat-dissipating, and temperature-resistant rubber products.
7. Nano Silicon Carbide Composite Nickel Plating on Metal Surfaces
Nano silicon carbide is used in composite nickel plating to enhance the properties of metal surfaces.
8. Applications in Special Plastics
Nano silicon carbide is used in special plastics such as polyimide (PI), polyether ether ketone (PEEK), and polytetrafluoroethylene (PTFE). It is also set to be widely used in PE, PVC, PA, PP, PS, PC, PET, PBT, ABS, POM, PPO, and PPS.
9. Applications in Lubricants
When added to lubricants, nano silicon carbide quickly integrates and forms a protective film on metal surfaces. It can also perform nano-repair on worn surfaces.
10. Other Applications
Nano silicon carbide is also used in high-performance ceramics (such as rocket nozzles and nuclear industry components), wave-absorbing materials, anti-wear lubricants, high-performance brake pads, high-hardness wear-resistant coatings, and composite ceramic reinforcements.