Overview of Silicon Carbide (SiC) Whisker
Our Silicon Carbide (SiC) Whisker is a high-aspect-ratio single-crystal fiber reinforcement material, precisely engineered with a length range of 10–50 μm. Combining the inherent hardness of ceramics with exceptional tensile strength, these whiskers are designed to significantly improve the mechanical and thermal properties of advanced composites, ceramics, and metal matrices.
Silicon carbide whisker
Optimized Length Distribution (10–50 μm): Ideal for homogeneous dispersion in various matrices without excessive agglomeration.
High Thermal Stability: Maintains structural integrity at temperatures exceeding 1600°C.
Excellent Mechanical Reinforcement: High elastic modulus (approx. 480 GPa) and tensile strength dramatically improve fracture toughness and wear resistance.
Chemical Inertness: Resistant to most acids and alkalis, ensuring durability in harsh environments.
Low Thermal Expansion: Minimizes thermal mismatch stresses in composite systems.
Ceramic Matrix Composites (CMCs): Reinforcing Al₂O₃, ZrO₂, or Si₃N₄ matrices for cutting tools and engine components.
Refractory Materials: Improving thermal shock resistance in kiln furniture and crucibles.
Abrasion-Resistant Coatings: Adding wear resistance to industrial seals, nozzles, and pump components.
Electronic Packaging: High-thermal-conductivity substrates for power devices.
Parameter |
Value / Description |
|---|---|
Material |
Silicon Carbide (SiC) |
Crystal Structure |
Single-crystal (β-SiC / α-SiC) |
Length Range |
10 – 50 μm |
Diameter |
0.5 – 2.0 μm (typical) |
Aspect Ratio |
10:1 – 50:1 |
Density |
3.21 g/cm³ |
Melting Point |
~2730 °C (decomposes) |
Tensile Strength |
> 20 GPa |
Elastic Modulus |
~480 GPa |
Hardness (Mohs) |
9.5 |
Color |
Greenish-gray to dark gray |
Company Profile
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, ceramic products, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Silicon Carbide Whisker, please feel free to contact us or click on the needed products to send an inquiry.
Payment Term
T/T, Western Union, Paypal, Credit Card etc.
Shipment Term
By air, by sea, by express, as customers request.
Q1: Why is the 10–50 μm length range important?
A: This range balances effective crack bridging and dispersion ease. Shorter whiskers reduce reinforcement; longer ones may agglomerate. 10–50 μm is ideal for most ceramic and metal matrix composites.
Q2: Are these whiskers safe to handle?
A: SiC whiskers are respirable fibers. Always use proper engineering controls (local exhaust ventilation, closed transfer) and personal protective equipment (N95/P100 mask, gloves, goggles). Do not dry sweep.
Q3: How should I disperse them in a matrix?
A: Use wet dispersion (e.g., in ethanol or water with ultrasonic agitation or ball milling). For metal matrices, mechanical alloying or stir casting is recommended.
Q4: What is the maximum working temperature?
A: They remain stable in inert atmospheres up to ~1600°C. In air, oxidation begins above 800°C, so protective coatings or inert environments are advised for high-temperature use.
Q5: Can I get a sample for testing?
A: Yes, free samples (5–10 grams) are available for qualified R&D projects. Please contact our technical sales team with your application details.
