Product Introduction
Silicon Carbide (SiC) is an ultra-hard synthetic compound of silicon and carbon that occurs naturally only in minute quantities as the rare mineral moissanite. First synthesized commercially in 1891, SiC has become one of the most important advanced ceramic materials due to its exceptional properties.
Our company produces high-purity silicon carbide through the Acheson process, where silica sand and petroleum coke are electrically heated to temperatures exceeding 2,500°C. This results in either:
Black SiC (98.5% purity) for industrial applications
Green SiC (99.5%+ purity) for precision applications
Single-crystal SiC for semiconductor use
Available forms include powders, grains, bonded shapes, and advanced semiconductor wafers.
Specification
Key Features & Benefits
1 Extreme Hardness & Wear Resistance
9.5 on Mohs scale (compared to 10 for diamond)
Superior abrasion resistance than aluminum oxide
Maintains hardness at elevated temperatures
2 Exceptional Thermal Properties
Thermal conductivity up to 120 W/mK (3× aluminum)
Withstands temperatures to 1,600°C in inert atmospheres
Low thermal expansion coefficient (4.0×10⁻⁶/°C)
3 Outstanding Chemical Stability
Resists acids, alkalis, and molten salts
Oxidation resistance up to 1,400°C
Non-reactive with most metals
4 Semiconductor Characteristics
Wide bandgap (3.2eV for 4H-SiC)
High breakdown voltage (10× silicon)
High electron mobility
5 Mechanical Strength
Flexural strength up to 550 MPa
Compressive strength exceeding 3 GPa
Maintains strength at high temperatures
Applications
1 Abrasives & Machining
Coated abrasives (sandpaper, grinding wheels)
Blasting media for surface preparation
Lapping and polishing compounds
Cutting tools for hard materials
2 Refractories & High-Temperature Materials
Kiln furniture for ceramics firing
Crucibles for metal melting
Linings for high-temperature furnaces
Rocket nozzles and thermal protection systems
3 Automotive Components
Brake discs for high-performance vehicles
Clutch facings for racing applications
Diesel particulate filters
4 Electronics & Power Devices
Schottky diodes and MOSFETs
RF power amplifiers
High-voltage power electronics
LED substrates
5 Advanced Ceramics
Armor plates for military vehicles
Wear-resistant pump components
Semiconductor process equipment
6 Emerging Applications
Quantum computing components
Nuclear fuel cladding
Space telescope mirrors
EV power inverters
Why choose us?
1 Superior Quality Control
Strict purity standards (up to 99.9999% for electronic grade)
Precise particle size distribution
Consistent batch-to-batch quality
2 Advanced Manufacturing Capabilities
State-of-the-art Acheson furnaces
Precision grinding and classification
Custom formulations available
3 Technical Expertise
Over 30 years of SiC production experience
Dedicated R&D team for custom solutions
Comprehensive material characterization
4 Global Supply Chain
Reliable raw material sourcing
Multiple production facilities
Efficient logistics network
5 Value-Added Services
Application engineering support
Material testing and analysis
Regulatory compliance assistance
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