Silicon Carbide Ceramics
Silicon Carbide (SiC) Ceramics Product Overview
Silicon Carbide Ceramics are high-performance engineering ceramics known for exceptional hardness, strength, high-temperature endurance, and corrosion resistance. They excel in wear, erosion, and high-temperature structural applications. Their low density and high thermal conductivity make them suitable for lightweight protection, high-temperature equipment, semiconductors, and functional parts.
SiC ceramics are produced via pressureless sintering for sheets, grinding balls, tubes, seals, and custom parts, or via hot-pressed sintering for high density, ballistic performance, and reliability. SiC ceramic filter membranes, with stable porosity and chemical resistance, are used in high-temperature gas filtration, industrial liquid processing, and environmental treatment.
5D-Materials supplies customizable silicon carbide ceramics tailored to sintering process, protection level, shape, and size.
5D-Materials Silicon Carbide Ceramics Categories
- Pressureless Sintered SiC: SiC ballistic ceramics, thin sheets, grinding balls, tubes, seals, and custom-shaped parts.
- Hot-Pressed SiC: High-performance ballistic armor, semiconductor components.
- SiC Ceramic Filter Membranes
Silicon Carbide Ceramics Product Advantages
Pressureless Sintered SiC:
- High hardness and wear resistance for sheets, grinding balls, and seals.
- High forming flexibility for complex shapes and tubular structures.
- High temperature and corrosion resistance for industrial wear and lightweight protection.
Hot-Pressed Sintered SiC:
- High density and strength for armor ceramics and high-end semiconductor components.
- Uniform microstructure ensures stable performance and high reliability.
- Excellent thermal shock and mechanical load resistance for demanding conditions.
SiC Ceramic Filter Membranes:
- Stable porosity with high temperature and chemical corrosion resistance.
- Suitable for high-temperature gas filtration, industrial liquid processing, and environmental treatment.
- High mechanical strength, long service life, and low maintenance costs.
Silicon Carbide Ceramics Application Fields
- Filtration: SiC ceramic filter membranes are used in oil-water separation, waste treatment, chemical reactors, acid/alkali recovery, desalination pre-treatment, water purification, mining water recycling, and food & beverage processing.
- Protection: SiC armor ceramics are used in personal protection (vests), armored vehicles, and aircraft structures, offering lightweight and efficient protection due to high hardness and low density.
- Wear Resistance: SiC sheets, grinding balls, tubes, and seals are used in high-wear applications like mineral processing, chemical transport, slurry nozzles, and wear-resistant liners.
- High-Temperature: SiC ceramics operate long-term at 1400–1600°C, ideal for furnace tubes, heat exchangers, and thermal support structures.
- Semiconductor & Electronics: Hot-pressed SiC ceramics and components are used in high-temperature semiconductor manufacturing and electronic structures, offering corrosion resistance, dimensional stability, and excellent thermal conductivity.
Silicon Carbide Ceramics Property Comparison Table
| Parameter | Pressureless Sintered SiC | Hot-Pressed Sintered SiC | SiC Ceramic Filter Membrane |
| Process | Pressureless Sintering, High Forming Flexibility | High Temp/Pressure Sintering, High Density | Micro-porous Structure, Controlled Pore Distribution |
| Bulk Density (g/cm³) | 2.95–3.05 | 3.15–3.20 | 2.5–2.7 |
| Porosity (%) | 4–8 | ≤2 | 30–50 |
| Vickers Hardness (HV) | 2400–2800 | 2800–3200 | 1200–1600 |
| Flexural Strength (MPa) | 300–450 | 450–650 | 100–200 |
| Fracture Toughness (MPa·m¹/²) | 3.0–3.5 | 3.5–4.0 | 1.5–2.0 |
| Thermal Conductivity (W/m·K) | 120–150 | 140–160 | 40–60 |
| Thermal Expansion Coeff. (10⁻⁶/K) | 4.5–5.0 | 4.2–4.5 | 4.5–5.0 |
| Max. Service Temp. | 1400–1500 °C | 1600–1650 °C | 800–1000 °C |
| Thermal Shock Resistance | Good | Excellent | Standard |
| Chemical Stability | Resistant to Acids, Alkalis, Corrosion | Resistant to Acids, Alkalis, Corrosion | Highly Corrosion Resistant, for Liquid Filtration |
| Typical Applications | Armor, Sheets, Grinding Balls, Seals | Armor, High-end Semiconductor Components | High-Temp Gas, Industrial & Corrosive Liquid Filtration |
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