What are silicon carbide as wear-resistant fillers used for?
Silicon carbide (SiC) is often used as wear-resistant fillers in a variety of industrial products due to its high hardness, excellent wear resistance and chemical stability, mainly covering the following areas:
1. Paints and coatings
Coatings (especially Teflon coatings, non-stick pan coatings, wear-resistant coatings, anti-corrosion coatings, powder coatings, UV coatings, etc.)
Adding green silicon carbide can significantly improve the hardness, wear resistance, weather resistance, anti-slip and corrosion resistance of the coating, and extend the life of the coating.
Wear-resistant protective coating
Used for metal surfaces susceptible to corrosion and wear such as desulfurization towers, chemical containers, and mining equipment, greatly extending the life of the equipment.
Add nano or micron-sized SiC powder to enhance the hardness and anti-scouring ability of the coating.
High-temperature anti-corrosion coating
Form a protective layer that is resistant to high-temperature oxidation (≤1600℃) and chemical corrosion in aerospace and energy equipment.
2. Ceramic products
Industrial wear-resistant ceramic parts
Fluid equipment parts such as pump bodies, impellers, cyclones, and volute linings can resist high-wear media (such as slurry and corrosive fluids).
Blast furnace linings, wear-resistant pipes, and ore crushing machine linings can reduce maintenance frequency.
Special structural ceramics
Adding SiC to sintered ceramics improves the wear resistance and impact resistance of bearings and sealing rings.
3. Polymer-based composite materials
Engineering plastics and rubber products
Filled in materials such as nylon and polyurethane to manufacture wear-resistant gears, conveyor belt linings, and mine screens.
Wear-resistant adhesives and repair agents
Used for on-site repair of equipment wear surfaces (such as desulfurization tower welds and cracks) to quickly restore wear resistance.
4. Grinding and polishing materials
Precision polishing abrasives
Nano-grade SiC is used for ultra-fine polishing of optical lenses and semiconductor wafers.
Industrial abrasives
Key hardening fillers for grinding tools such as grinding wheels, cutting discs, and oilstones.
5. Special functional materials
High temperature resistant electric heating elements: Adding SiC to silicon carbon rods improves thermal stability and mechanical strength.
Military and aerospace components: Wear-resistant coating on the surface of turbine blades and high temperature resistant bearings.